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EP1756349A1 - Generateur de vapeur comprenant au moins un canal de vapeur en spirale et au moins un element de chauffage a resistance plate - Google Patents

Generateur de vapeur comprenant au moins un canal de vapeur en spirale et au moins un element de chauffage a resistance plate

Info

Publication number
EP1756349A1
EP1756349A1 EP05742005A EP05742005A EP1756349A1 EP 1756349 A1 EP1756349 A1 EP 1756349A1 EP 05742005 A EP05742005 A EP 05742005A EP 05742005 A EP05742005 A EP 05742005A EP 1756349 A1 EP1756349 A1 EP 1756349A1
Authority
EP
European Patent Office
Prior art keywords
steam
channel
spiral
shaped
generator
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Withdrawn
Application number
EP05742005A
Other languages
German (de)
English (en)
Inventor
Zhenhua Yu
Mohankumar Valiyambath Krishnan
Bas J. Oosterman
Ajit P. Singh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Priority to EP05742005A priority Critical patent/EP1756349A1/fr
Publication of EP1756349A1 publication Critical patent/EP1756349A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • D06F75/12—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water supplied to the iron from an external source
    • 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

Definitions

  • Steam generator having at least one spiral-shaped steam channel and at least one flat resistive heating element
  • the present invention relates to a steam generator for use in a domestic appliance such as a steam iron, comprising: at least one channel unit enclosing a spiral- shaped steam channel for conducting water and steam through the channel unit; and at least one flat resistive heating element for heating a content of the steam channel of the at least one channel unit.
  • Steam generators are well-known in practice. There is a need for applying steam for the purpose of various tasks, for example removing wallpaper from a wall on which it has been glued, cleaning and ironing.
  • steam irons have been developed, which contain a steam generator, or which are connected to a steam generator located outside of the steam iron.
  • the present invention relates to a steam generator which is suitable to be positioned inside a steam iron. Therefore, in the following, the steam generator will be described in the context of steam irons having an internal steam generator. However, this does not mean that the present invention is not suitable to be applied in different situations and contexts; the present invention is relevant in all situations in which steam needs to be generated in a controlled manner.
  • a conventional steam iron comprises a soleplate having a contacting surface for contacting objects to be ironed, and a housing for accommodating various other components of the steam iron.
  • the soleplate comprises a bottom portion of a steam channel, which is part of a steam generator for generating steam during operation of the steam iron.
  • a cover is provided for covering the soleplate and closing the steam channel.
  • the soleplate further includes a typically U-shaped tubular heating element, which serves for heating both the soleplate and the steam channel during operation of the steam iron.
  • Flat resistive heating elements are heating elements which are deposited as a thin layer on a surface by means of printing or other suitable techniques. Under the influence of an electric current, the flat resistive heating elements are capable of generating heat.
  • the flat resistive heating elements are formed by a layer of synthetic resin in which electrically conducting particles are embedded.
  • flat resistive heating elements are not suitable to be applied in an environment in which temperatures above a certain level occur.
  • the temperature of a heating element gets higher than a predetermined maximum allowable temperature, the heating element cracks and can not be used anymore. Therefore, the use of flat resistive heating elements is limited.
  • the length of the steam channel needs to be such that the water that is supplied to the steam channel can actually be converted into steam. Normally, the required length of the steam channel is much larger than the length of the soleplate. Therefore, the steam channel is usually shaped such as to follow a meandering path over the soleplate.
  • the temperature difference between the input and the output is small in comparison with the temperature difference which is applicable to a situation in which the steam channel has a zigzag shape or another shape which is more stretched than the spiral shape, so that a lower temperature at the output is realized.
  • a steam iron having a flow heater is disclosed. During operation, the flow heater is kept at a temperature of more than 100°C, so that at least a major portion of the water introduced into the flow heater is converted into steam, and the flow heater acts like a steam generator.
  • the water and the steam are conducted through the flow heater by means of a channel, which, in one possible embodiment, is arranged such as to follow a spiraling course.
  • the channel is shaped like a duct, and is positioned between a planar heat distribution plate and a closing element.
  • heater elements are arranged, which comprise a resistance layer.
  • a steam generator which complies with the following description: a steam generator comprising at least one channel unit enclosing a spiral-shaped steam channel for conducting water and steam through the channel unit, wherein the least one channel unit comprises a body and a cover, wherein a spiral-shaped groove is arranged in the body, and wherein the cover covers at least a portion of the body in which the groove is arranged; and at least one flat resistive heating element for heating a content of the steam channel of the at least one channel unit, which is arranged on a surface of the body of the at least one channel unit.
  • the steam generator comprises at least one channel unit and at least one flat resistive heating track arranged on a surface of the body of the at least one channel unit.
  • the channel unit has a relatively simple design, as it only comprises a body in which a spiral-shaped groove is arranged and a cover for closing the groove.
  • the channel unit comprises a steam channel which is enclosed by the body and the cover, more in particular, by walls of the groove arranged in the body and the cover.
  • the at least one flat resistive heating element is arranged on a surface of the body of the at least one channel unit.
  • the body of the at least one channel unit of the steam generator according to the present invention is a casting.
  • An important advantage related to this preferred embodiment of the body is that the process needed for manufacturing it, i.e. a casting process, is relatively simple.
  • a steam generator having a spiral-shaped steam channel and at least one flat resistive heating element for heating a content of the steam channel has important advantages. In general, in a spiral-shaped steam channel, the content is forced to follow a spiral-shaped path, wherein the content is subjected to centrifugal forces.
  • the steam generator according to the present invention comprises steam promotion means for promoting the conversion of water to steam in the steam channel.
  • these steam promotion means are only arranged on a bottom portion of an inner surface of the wall of the steam channel.
  • the steam promotion means cover more than just this bottom portion, preferably the entire inner surface of the wall of the steam channel, following the insight that the wall of the steam channel is intensely contacted due to its spiral course.
  • all suitable types of steam promotion means may be applied, for example mechanical steam promotion means such as wire mesh or aluminum foam.
  • Fig. 1 is a diagrammatical top view of a steam generator according to a first preferred embodiment of the present invention, wherein a cover of the steam generator is removed;
  • Fig. 2 is a diagrammatical view of a section taken along a line A-A in Fig. 1 ;
  • Fig. 3 is a diagrammatical top view of a soleplate of a steam iron;
  • Fig. 4 is an exploded view of a steam generator according to a second preferred embodiment of the present invention;
  • Fig. 5 is a diagram illustrating the operation of the steam generator as shown in Fig. 4; Fig.
  • FIG. 6 is an exploded view of a steam generator according to a third preferred embodiment of the present invention.
  • Fig. 7 is a diagrammatical top view of a steam generator according to a fourth preferred embodiment of the present invention, wherein a cover of the steam generator is removed.
  • Figs. 1 and 2 show a steam generator 1 according to a first preferred embodiment of the present invention.
  • the steam generator comprises a channel unit 18 having two main components, i.e. a body 20 and a cover 10.
  • Fig. 1 is a diagrammatical top view of the steam generator 1, wherein the cover 10 of the channel unit 18 is removed, so that a top side of the body 20 is visible. Consequently, the cover 10 is only shown in Fig. 2, which is a diagrammatical sectional view of the steam generator 1.
  • the body 20 of the channel unit 18 is shaped as a disc having a circular circumference.
  • the body 20 is a casting.
  • a spiral-shaped groove 30 is arranged.
  • the cover 10 is positioned at the side of the body 20 where the spiral-shaped groove 30 is, and serves for closing the groove 30, so that a spiral-shaped steam channel 34 which is closed at a top side is obtained.
  • the cover 10 comprises a central hole 11, which gives access to a central portion 31 of the spiral-shaped steam channel 34.
  • a connection channel 32 is arranged in the body 20, which serves for giving access to an end portion 33 of the steam channel 34 from a circumferential surface 21 of the body 20.
  • the position of the connection channel 32 is indicated by means of dashed lines.
  • a flat resistive heating element 40 is arranged at a side of the body 20 which is not covered by the cover 10.
  • the heating element 40 is shaped as a rectangular piece which covers at least part of the surface of the body 20 on which it is arranged, which, for the sake of clarity, will hereinafter be referred to as bottom surface 22 of the body 20. Furthermore, in the following, the opposite surface of the body 20, which is covered by the cover 10, will be referred to as top surface 23.
  • the heating element 40 is activated under the influence of an electric current, and transmits heat to the body 20.
  • the temperature prevailing inside the spiral-shaped steam channel 34 is put at a relatively high level, above 100°C, such that water that is present inside the spiral-shaped steam channel 34 is converted to steam.
  • a movement of water and steam through the spiral-shaped steam channel 34 is automatically obtained as a result of the expansion process which takes place at the moment water evaporates and steam is formed inside the steam channel 34.
  • the steam generator 1 may be applied in two different ways. According to a first option, water is supplied to the steam generator 1 through the central hole 11 in the cover 10, and enters the steam channel 34 at the central portion 31. Furthermore, steam exits the steam generator 1 at the end portion 33 of the spiral-shaped steam channel 34, through the connection channel 32. According to a second option, water is supplied to the steam generator 1 through the connection channel 32, and enters the spiral-shaped steam channel 34 at the end portion 33. Furthermore, steam exits the steam generator 1 at the central portion 31 of the spiral-shaped steam channel 34, through the central hole 11 of the cover 10.
  • the application of the steam generator 1 according to the present invention has many advantages, which are related to the fact that the steam channel 34 is spirally shaped and the fact that at least one flat resistive heat element 40 is arranged on the body 20 for the purpose of heating the content of the spiral- shaped steam channel 34.
  • the content of the spiral-shaped steam channel 34 is forced to move through the steam channel 34.
  • the content is forced to move from the central portion 31 of the spiral-shaped steam channel 34 to the end portion 33 of the steam channel 34 or the other way around, dependent of where the water is supplied (the position where the water is supplied may be determined with a view of facilitation of scale discharge or the construction of the steam generator 1 and/or of a steam appliance in which the steam generator 1 is incorporated).
  • the content of the spiral-shaped steam channel 34 tends to rotate along a wall of the steam channel 34. Furthermore, the content is pushed towards an outer portion of the wall of the spiral-shaped steam channel 34 under the influence of centrifugal forces. As a result of the secondary movement of the content and the movement under the influence of centrifugal forces, complete contact between the wall of the spiral-shaped steam channel 34 and the content of the steam channel 34 is ensured, whereby a relatively high heat transfer efficiency is obtained. In experimental tests, it has been found that scale forms a ring shape at the cross-section of the spiral-shaped steam channel 34, which confirms the occurrence of the secondary movement of the content.
  • the steam generator 1 may be of a relatively light-weight and small design.
  • the dimensions of the spiral-shaped steam channel 34 may be as small as 3x3 mm or even 2x2 mm, while the steam generator 1 is still capable of supplying steam at a rate of, for example, up to 52 grams per minute.
  • the dimensions of the cross-section of the steam channel 34 are chosen such as to be 7x7 mm or even larger.
  • a very important advantage of a steam channel 34 having a larger cross-section is that such a steam channel 34 is capable of containing more scale, whereby the life of the steam generator 1 is prolonged.
  • Another advantage is that the internal pressure may be lower.
  • contact between the content of the steam channel and the wall of the steam channel mainly takes place at a bottom portion of the steam channel under the influence of gravity.
  • the spiral-shaped steam channel 34 comprises a number of dividing walls delimiting annular portions of the steam channel 34 having different distances with respect to the centre of the spiral shape.
  • the presence of multiple dividing walls prevents water droplets from escaping between the cover 10 and the top surface 23 of the body 20.
  • a spiral-shaped steam channel 34 In a spiral-shaped steam channel 34, the absolute distance between the inlet and the outlet is much smaller than in a zigzag steam channel having the same length. The same is true for the temperature difference. Therefore, the performance of the spiral-shaped steam channel 34 is more reliable, and warping of the body 20 and/or the heating elements 40 is prevented. In comparison with known U-shaped tubular heating elements, flat resistive heating elements 40 are capable of supplying heat in a more efficient way. Therefore, in many cases, the application of such heating elements 40 is preferred. In case the steam channel 34 has a spiral shape, the temperature difference between the inlet and the outlet of the steam channel 34 is small enough for the steam channel 34 to be combined with flat resistive heating elements 40.
  • the spiral-shaped steam channel 34 may be shaped as shown in Fig. 1, but may also have another shape.
  • the steam channel 34 may spiral in ovals, triangles or rectangles. Naturally, the triangles and rectangles are less preferred, as these shapes comprise sharp deflections.
  • the spiral shape of the groove 30 which is disclosed in Fig. 1 resembles the shape of a so-called Archimedean spiral. However, within the scope of the present invention, various types of spiral shapes are possible.
  • the steam channel 34 may have the shape of any type of two-dimensional spiral, for example a logarithmic spiral, a sinusoidal spiral or Euler's spiral.
  • the spiral-shaped steam channel 34 may be heated at one side, as is the case in the example shown in Figs. 1 and 2.
  • the heating elements 40 are arranged at more sides of the spiral-shaped steam channel 34, for example on the top surface 23 of the body 20.
  • the arrangement of flat resistive heating elements 40 is not limited to flat surfaces; the heating elements 40 may also be arranged on the circumferential surface 21 of the body 20. In such case, dispensing techniques may be applied in the process of arranging the heating elements 40 on the surface 21.
  • the cross-section of the spiral-shaped steam channel 34 has a rectangular shape.
  • FIG. 3 a top side of a soleplate 50 of a steam iron is diagrammatically shown.
  • the soleplate comprises a generator base 15 in which a spiral-shaped groove 30 is arranged.
  • the generator base 15 is covered by means of a cover (not shown in Fig. 3).
  • the generator base 15 and the cover form a channel unit enclosing a spiral-shaped steam channel.
  • This channel unit is part of a steam generator unit, which further comprises at least one flat resistive heating element (not shown in Fig. 3) arranged on the generator base 15.
  • at least one flat resistive heating element (not shown in Fig. 3) arranged on the generator base 15.
  • water enters the spiral-shaped steam channel at its central portion, and steam exits the steam channel at its end portion.
  • a path which is followed by the water and the steam through the steam channel of the channel unit during operation of the steam iron is indicated by means of a thick line.
  • the generator base 15 is positioned in a generator chamber 51 of the steam iron, of which a bottom portion is delimited by a top surface 52 of the soleplate 50 and a first rib 53.
  • two holes 54 are provided in the first rib 53, giving access to a steam distribution chamber 55 surrounding a substantial portion of the generator chamber 51, of which a bottom portion is delimited by the top surface 52 of the soleplate 50, the first rib 53 and a second rib 56.
  • two paths leading through the holes 54 in the first rib 53 into the steam distribution chamber 55, which are followed by steam exiting the channel unit, are indicated by means of a thick line/arrow.
  • the soleplate 50 including the generator base 15 and the ribs 53, 56, is formed as a casting. In the steam iron, both the generator chamber 51 and the steam distribution chamber 55 are closed by a cover (not shown in Fig. 3).
  • one overall cover for covering the chambers 51, 55 as well as the groove 30 of the generator base 15 may be provided.
  • steam openings 57 are provided in the soleplate 50 for letting through steam to the material being positioned underneath the soleplate 50, which needs to be steamed and/or ironed.
  • the steam generator according to the present invention may be used to generate more than just one type of steam, for example wet steam, which is defined as a steam- water mixture, saturated steam and super-heated steam, depending on which type of steam is needed at a certain stage.
  • the steam generator preferably comprises at least two channel units 18 having spiral- shaped steam channels 34, wherein the steam channels 34 are interconnected.
  • FIG. 4 An example of a steam generator 2 which is suitable for generating different types of steam is diagrammatically shown in Fig. 4.
  • the steam generator 2 as shown in Fig. 4 comprises a bottom channel unit 18a and a top channel unit 18b, which, in the shown example, are of the same general design.
  • Both channel units 18a, 18b comprise a body 20 which is shaped like a disc having a rectangular circumference having round edges, and in which a spiral-shaped groove 30 is arranged.
  • both channel units 18a, 18b comprise a cover 10 for covering the side of the body 20 where the spiral-shaped groove 30 is, so that a spiral-shaped steam channel 34 is formed.
  • the covers 10 of the channel units 18a, 18b preferably comprise metal.
  • the body 20 of the channel units 18a, 18b comprises a circular groove 37 for receiving sealing means such as an O-ring or the like, which circular groove 37 encompasses the spiral-shaped groove 30.
  • a central hole 11 is provided, which gives access to a central portion 31 of the spiral-shaped steam channel 34 of the bottom channel unit 18a.
  • a central hole 11 is provided, which gives access to a central portion 31 of the spiral-shaped steam channel 34 of the top channel unit 18b.
  • both channel units 18a, 18b comprise a connection channel 32, which gives access to an end portion 33 of the spiral-shaped steam channel 34 from a circumferential surface 21 of the body 20 of the respective channel unit 18a, 18b.
  • the cover 10 of the bottom channel unit 18a is positioned at a top side thereof, whereas at a bottom side of the bottom channel unit 18a, a flat resistive heating element (not shown in Fig. 4) is arranged, for the purpose of heating a content of the steam channel 34 of the bottom channel unit 18a.
  • the cover 10 of the top channel unit 18b is positioned at a bottom side thereof, whereas at a top side of the top channel unit 18b, a flat resistive heating element 40 is arranged.
  • the flat resistive heating elements 40 comprise flat resistive heating tracks having substantially the same spiral shape as the steam channels 34.
  • a heat insulating plate 45 is arranged, which comprises a heat insulating material such as mica.
  • the heating elements 40 are switched on. Water is supplied to the steam generator 2 at the central portion 31 of the spiral- shaped steam channel 34 of the top channel unit 18b, and wet steam or saturated steam exits the top channel unit 18b through its connection channel 32. Subsequently, the wet steam or saturated steam is supplied to the bottom channel unit 18a, wherein the steam enters the spiral-shaped steam channel 34 of the bottom channel unit 18a at its end portion 33.
  • super-heated steam exits the bottom channel unit 18a at the central portion 31 of the spiral- shaped steam channel 34.
  • a tube or the like is arranged, which is not shown in the exploded view of Fig. 4. It is not necessary that all of the steam exiting the top channel unit 18b is supplied to the bottom channel unit 18a.
  • the steam generator 2 is part of a steam iron, a portion of the wet steam or saturated steam may be supplied to a spray nozzle, for example.
  • a valve or the like may be applied.
  • the channel units 18a, 18b of the steam generator 2 may have many characteristics in common, but this is not necessary.
  • the design of each channel unit 18a, 18b is adapted to the type of steam that needs to be obtained.
  • characteristics of the cross-section of the steam channel 34 may be adjusted to the type of steam that needs to be supplied by the channel unit 18a, 18b.
  • the design of the bottom channel unit 18a may be optimized with a view of the supply of super-heated steam
  • the design of the top channel unit 18b may be optimized with a view of the supply of wet steam or saturated steam.
  • FIG. 6 is an exploded view of a steam generator 3 which resembles the steam generator 2 as shown in Fig. 4 to a large extent. In fact, the only difference pertains to the number of plates between the bodies 20 of the channel units 18a, 18b. In the steam generator 2 as shown in Fig. 4, three plates are present between the bodies 20 of the components 18a, 18b, i.e.
  • the steam generators 2, 3 as shown in Figs. 4 and 6 comprise two spiral- shaped steam channels 34. According to the present invention, in case the steam generator comprises more than one steam channel 34, the number of steam channels 34 may be higher than two.
  • Fig. 7 shows a circular steam generator 4 according to the present invention, which comprises a body 20 in which a channel chamber 35 is provided.
  • the channel chamber 35 is divided into seven spiral-shaped steam channels 34 by means of seven curved dividing walls 36 extending between a centre of the steam generator 4 and a circumference of the steam generator 4.
  • steam channels 34 extending between a centre of the steam generator 4 and a circumference of the stream generator 4, in a spiraling fashion, are realized.
  • a width of the spiral-shaped steam channels 34 is larger near the circumference of the steam generator 4, and smaller near the centre of the steam generator 4. Therefore, during normal use of the steam generator 4, water is supplied at the centre of the steam generator 4, and steam exits the steam generator 4 at the circumference of the steam generator 4.
  • the steam chamber 35 is closed by means of a bottom 24 of the body 20.
  • the steam generator 4 comprises a cover (not shown in Fig. 7) for closing another side of the channel chamber 35, which cover has a central hole for providing access to the centre of the steam generator 4.
  • the steam generator 4 comprises at least one flat resistive heating element (also not shown in FigJ) arranged on an outer surface of the body 20 for heating a content of the channel chamber 35 during operation of the steam generator 4.
  • steam promotion means are used to promote water evaporation in the steam channel 34. In case the steam channel 34 does not have a spiral shape, and steam promotion means are present, these means are only applied to a bottom portion of the steam channel 34, as this portion is the only portion that is contacted by the content of the steam channel 34.
  • the steam promotion means are applied to the entire inner surface of the steam channel 34. This does not alter the fact that the steam promotion means may also only be applied to a bottom portion of the steam channel 34.
  • the efficiency of the steam generator 1, 2, 3, 4 is increased.
  • a steam generator 1, 2, 3, 4 having steam promotion means is better capable of meeting heavy duty requirements.
  • the steam promotion means also play a role in the prevention of spitting.
  • the steam promotion means may be designed in any conceivable way.
  • the inner surface of the steam channel 34 may be roughened by means of sand blasting to stimulate water spreading and to increase the number of nucleation sites.
  • commercially available products for promoting steam may be applied.
  • mechanical measures are taken, including covering the inner surface of the steam channel 34 with wire mesh, aluminum foam, fine grids or an array of spikes.
  • chemical means such as anodizing, Xylan, QF & Ludox can also be taken as steam promotion means.
  • water which has been used in the above, should not be understood such as to only cover pure water in a chemical sense (H 2 O) or distilled water, but any fluid that is normally supplied to a steam generator, for example tap water or a mixture of water and a garment treatment agent.
  • the simplest embodiment of the cover 10, 41 of the channel unit 18 is a plate having a planar top surface and a planer bottom surface.
  • a spiral-shaped groove may be arranged in a surface of the cover 10, 41 which is intended to contact the body 20, wherein the shape of the spiral of the groove in the cover 10, 41 and the shape of the spiral of the groove 30 in the body 20 are each other's mirror images, such as to fit well to each other in order to form the steam channel 34.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Irons (AREA)

Abstract

L'invention concerne un générateur de vapeur (1) comprenant un corps (20) dans lequel une rainure en spirale (30) est agencée ainsi qu'un canal de connexion (32) qui permet d'accéder à une partie d'extrémité (33) de la rainure en spirale (30) à partir de la surface circonférentielle (21) dudit corps (20). Afin de fermer la rainure en spirale (30), un bouchon doté d'un trou permettant d'accéder à une partie centrale (31) de ladite rainure en spirale (30) est prévu. Pendant le fonctionnement du générateur de vapeur (1), de l'eau est fournie au niveau d'une zone de la partie centrale (31) et de la partie d'extrémité (33) de la rainure en spirale (30). Sous l'influence de la chaleur, de la vapeur sortant d'une autre zone de la partie centrale (31) et de la partie d'extrémité (33) de la rainure en spirale (30) est produite. Un élément de chauffage à résistance plate est agencé sur une surface du corps (20) afin de fournir de la chaleur.
EP05742005A 2004-06-02 2005-05-26 Generateur de vapeur comprenant au moins un canal de vapeur en spirale et au moins un element de chauffage a resistance plate Withdrawn EP1756349A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05742005A EP1756349A1 (fr) 2004-06-02 2005-05-26 Generateur de vapeur comprenant au moins un canal de vapeur en spirale et au moins un element de chauffage a resistance plate

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP04102447 2004-06-02
PCT/IB2005/051724 WO2005118944A1 (fr) 2004-06-02 2005-05-26 Generateur de vapeur comprenant au moins un canal de vapeur en spirale et au moins un element de chauffage a resistance plate
EP05742005A EP1756349A1 (fr) 2004-06-02 2005-05-26 Generateur de vapeur comprenant au moins un canal de vapeur en spirale et au moins un element de chauffage a resistance plate

Publications (1)

Publication Number Publication Date
EP1756349A1 true EP1756349A1 (fr) 2007-02-28

Family

ID=34968685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05742005A Withdrawn EP1756349A1 (fr) 2004-06-02 2005-05-26 Generateur de vapeur comprenant au moins un canal de vapeur en spirale et au moins un element de chauffage a resistance plate

Country Status (5)

Country Link
US (1) US20080040954A1 (fr)
EP (1) EP1756349A1 (fr)
JP (1) JP2008501399A (fr)
CN (1) CN1965123A (fr)
WO (1) WO2005118944A1 (fr)

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US20080040954A1 (en) 2008-02-21
CN1965123A (zh) 2007-05-16
WO2005118944A1 (fr) 2005-12-15

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