CN1965123A - Steam generator having at least one spiral-shaped steam channel and at least one flat resistive heating element - Google Patents
Steam generator having at least one spiral-shaped steam channel and at least one flat resistive heating element Download PDFInfo
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- CN1965123A CN1965123A CNA2005800181063A CN200580018106A CN1965123A CN 1965123 A CN1965123 A CN 1965123A CN A2005800181063 A CNA2005800181063 A CN A2005800181063A CN 200580018106 A CN200580018106 A CN 200580018106A CN 1965123 A CN1965123 A CN 1965123A
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- steam
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- steam generator
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- 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
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- 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
Abstract
A steam generator (1) comprises a body (20) in which a spiral-shaped groove (30) is arranged, as well as a connection channel (32) which provides access to an end portion (33) of the spiral-shaped groove (30) from a circumferential surface (21) of the body (20). For the purpose of closing the spiral-shaped groove (30), a cover is provided, which has a hole for providing access to a central portion (31) of the spiral-shaped groove (30). During operation of the steam generator (1), water is supplied at one of the central portion (31) and the end portion (33) of the spiral-shaped groove (30). Under the influence of heat, steam is generated, which exits at another one of the central portion (31) and the end portion (33) of the spiral-shaped groove (30). For the purpose of supplying heat, a flat resistive heating element is arranged on a surface of the body (20).
Description
The present invention relates to a kind of for example steam generator of the household electrical appliance of steam iron that is used for, comprising: at least one channel unit, its sealing are used for the spiral-shaped steam channel through this channel unit conducting water and steam; And at least one flat resistive heating element, be used to heat contents in the steam channel of described at least one channel unit.
Steam generator is that people know in practice.People need apply steam as multiple purpose, for example remove wallpaper, cleaning and flatiron on the metope of having pasted wallpaper.In order to make the user can apply steam during pressing, people have developed steam iron, comprise steam generator in the steam iron, and perhaps steam iron is connected to the steam generator that is positioned at the steam iron outside.Particularly, the present invention relates to a kind of steam generator that is suitable for being arranged on steam iron inside.Therefore, steam generator hereinafter described is arranged in the steam iron with steam inside generator.Yet this is not to mean that the present invention is unsuitable for being applied to other occasion and environment; The present invention can be applicable to produce in a controlled manner all occasions of steam.For example, the vacuum cleaner that also can be applicable to facial steam generator, wallpaper removing steam generator, steam cleaner and have vapour source according to steam generator of the present invention.
Usually, traditional steam iron comprises base plate and shell, and this base plate has the contact surface that is used to contact ironed object, and this shell is used to hold a plurality of miscellaneous parts of steam iron.In general embodiment, this bottom comprises the bottom of steam channel, and this steam channel is a part that is used at the steam generator of steam iron operating period generation steam.Covering portion is set to be used to cover this bottom and to seal this steam channel.This base plate also comprises the tubular heating element that is generally U-shaped, and this tubular heating element is used for heating this base plate and this steam channel in steam iron operating period.When this steam channel of heating, the water in this steam channel changes into steam.In order to derive steam, steam openings is set in base plate, this steam openings is connected to steam channel.
In the conventional steam iron operating period that describe the last period, encourage heating element heater, and water to steam channel.Under the influence of the heat that heating element heater provides, the temperature of the contact surface of base plate raises, and the temperature of merchantable thing also raises in steam channel simultaneously.Thereby the water in the steam channel changes into steam.In the iron process that adopts steam iron, ironed object touches the thermo-contact surface, and steam supplies to these objects through steam openings.
In order to improve the performance of steam iron, expectation is adopted a plurality of flat resistive heating elements but not the U-shaped tubular heating element.The plane heating element is to be deposited as the heating element heater that thin layer forms from the teeth outwards by printing or other appropriate process.Under the influence of electric current, flat resistive heating element can produce heat.For example, the synthetic resin layer by embedded conductive particle forms this flat resistive heating element.When this flat resistive heating element is arranged on the surface that comprises the conductive material of metal for example, need between this surface and this heating element heater, electric insulation layer be set and prevents short circuit.
According to the current status of planar resistor heating technique, flat resistive heating element is not suitable for temperature and surpasses in the environment of specified level.When the temperature of heating element heater was higher than predetermined maximum permissible temperature, this heating element heater can rupture, and can not re-use later on.Therefore, the use of flat resistive heating element is restricted.
The length of steam channel should meet the following conditions: the water that supplies to steam channel can actually change into steam.Usually, the Len req of steam channel is much larger than the length of base plate.Therefore, steam channel forms the serpentine path on the base plate usually.In fact, the input of this steam channel and the temperature difference between the output look so big, so that can not adopt flat resistive heating element, also can not obtain stable steam iron performance, because under the influence of the relative higher temperature of the output of steam channel, this heating element heater ruptures possibly.
According to the situation of prior art, by being set, spiral-shaped steam channel solves the problems referred to above, that is, thus the too high problem that can not adopt flat resistive heating element of the output temperature of steam channel.The input and the temperature difference between the output of spiral-shaped steam channel look enough little, thereby can adopt flat resistive heating element to come the heating steam channel content to receive thing.During operation, no matter being the center from steam generator, water flows to periphery or from the periphery center of flowing, the situation of the steam channel of other shapes that more stretch with zigzag or than spirality is compared, the input and the temperature difference between the output of this spiral-shaped steam channel are all smaller, therefore can realize lower temperature at output.
At WO 02/27246, a kind of steam iron with flow heater is disclosed.During operation, flow heater remains on and is higher than 100 degrees centigrade temperature, and the major part at least that therefore is incorporated into the water of this flow heater inside changes into steam, and flow heater is as similar steam generator.Through flow heater, in an optional embodiment, this passage is arranged to spiral shape by the passage conducting for water and steam.This channel formation is similar conduit, and is arranged between plane heat sink and the closure elements.On the side of this heat sink with respect to that side of this passage of contact heating element is set, this heating element comprises resistive layer.
One of purpose of the present invention is, improves disclosed steam generator among the WO 02/27246, keeps the spiral-shaped of steam channel simultaneously and still uses stratie and come the heating steam channel content to receive thing.Realize this purpose by a kind of steam generator, this steam generator is abideed by following description: a kind of steam generator, comprise at least one channel unit, this channel unit sealing is used for the spiral-shaped steam channel through this channel unit conducting water and steam, wherein this at least one channel unit comprises main body and covering portion, wherein in this main body, spiral slot is set, and in wherein should covering portion main body covered at least that part of of this groove be set; And comprise at least one flat resistive heating element, and being used to heat contents in the steam channel of this at least one channel unit, this steam channel is arranged on the surface of this main body of this at least one channel unit.
According to an important aspect of the present invention, this steam generator comprises at least one channel unit and is arranged at least one planar resistor heating track on the body surfaces of this at least one channel unit.This channel unit has relatively simply design, because it only comprises main body and covering portion, wherein is provided with spiral slot in this main body, and should covering portion be used to seal this groove.Therefore, this channel unit comprises the steam channel by the sealing of main body and covering portion, more specifically, comprises by being arranged on the cell wall in the main body and the steam channel of covering portion sealing.
In steam generator according to the present invention, this at least one flat resistive heating element is arranged on the body surfaces of this at least one channel unit.In this way, guarantee the major part of direct heating steam passage, therefore, the heating process of contents is relatively very effective in the steam channel.
Preferably, the main body according to this at least one channel unit of steam generator of the present invention is a foundry goods.The significant advantage of this main body preferred embodiment is that the manufacture process of this foundry goods just casting process is simple relatively.
Steam generator has spiral-shaped steam channel and adopts at least one flat resistive heating element to come the heating steam channel content to receive thing and has significant advantage.Usually, in spiral-shaped steam channel, force these contents to flow along spirality path, wherein these contents stand centrifugal force.Therefore, the wall of steam channel can closely contact with the interior contents of steam channel, and heat transfer efficiency is higher relatively.
Preferably, steam generator according to the present invention comprises and is used for promoting that the water of steam channel changes into the steam promotion means of steam.Usually, if steam promotion means is set in steam generator, then these steam promotion means only are arranged on the bottom of inner surface of steam channel wall.According to the present invention, this steam promotion means not only only covers the bottom, and it preferably covers the total inner surface of steam channel wall, and the steam channel wall just can be able to tight contact because of spiral-shaped like this.Within the scope of the invention, can adopt the steam promotion means of all adequate types, for example the mechanical steam of woven wire or aluminum foam material and so on promotes device.
Come more detailed elaboration the present invention and advantage thereof now with reference to accompanying drawing, wherein identical Reference numeral is represented identical parts, wherein:
Fig. 1 is the schematic top view of steam generator according to a first advantageous embodiment of the invention, and wherein the covering portion of steam generator is removed;
Fig. 2 is the schematic sectional view along the line A-A cross section of Fig. 1;
Fig. 3 is the schematic top view of the base plate of steam iron;
Fig. 4 is the exploded view of steam generator according to a second embodiment of the present invention;
Fig. 5 is the view that the operating process of steam generator shown in Figure 4 is shown;
Fig. 6 is the exploded view of the steam generator of a third embodiment in accordance with the invention; And
Fig. 7 is the schematic top view of the steam generator of a fourth embodiment in accordance with the invention, and wherein the covering portion of steam generator is removed.
Fig. 1 and 2 illustrates steam generator 1 according to a first advantageous embodiment of the invention.This steam generator comprises channel unit 18, and this channel unit has two master units, just main body 20 and covering portion 10.Fig. 1 is the schematic top view of steam generator 1, and wherein the covering portion 10 of channel unit 18 is removed, and therefore can see the top side of main body 20.Therefore, at Fig. 2 covering portion 10 only is shown, Fig. 2 is the schematic sectional view of steam generator 1.
In the example shown, the main body 20 of channel unit 18 forms dish type, and it has circular periphery.In a preferred embodiment, main body 20 is foundry goods.In main body 20, spiral slot 30 is set.Covering portion 10 is arranged on spiral slot 30 residing main body 20 those sides, and is used for enclosed slot 30, therefore obtains the spiral-shaped steam channel 34 of top side sealing.Covering portion 10 comprises centre bore 11, utilizes this centre bore can touch the core 31 of spiral-shaped steam channel 34.
Except spiral slot 30, interface channel 32 also is arranged in the main body 20, utilizes this interface channel can touch the end 33 of steam channel 34 from the periphery surface 21 of main body 20.In Fig. 1, the position with dashed lines of interface channel 32 is represented.
Do not have that side of the main body 20 that covers in covering portion 10, flat resistive heating element 40 is set.In the example shown, heating element heater 40 forms square plate, and it covers the surperficial that part of of main body 20 that it was positioned at least, and during clear, hereinafter this part is meant the basal surface 22 of main body 20.And hereinafter, the apparent surface of the main body 20 that is covered by covering portion 10 is meant top surface 23.
In the operating period of steam generator 1, excitation heating element heater 40 is transferred to heat main body 20 then under current affects.Thereby the temperature of merchantable thing can reach higher relatively level in spiral-shaped steam channel 34, is higher than 100 degrees centigrade, therefore the water in the spiral-shaped steam channel 34 can be changed into steam.Water and vapor stream are crossed spiral-shaped steam channel 34 and can be carried out automatically for expansion process because of itself, and this expansion process occurs in water evaporation and steam when being formed on steam channel 34 inside.
Employing steam generator 1 according to the present invention has many advantages, these advantages are all relevant with following factor: steam channel 34 spirality, and for heating contents are arranged at least one flat resistive heating element 40 on the main body 20 in this spiral-shaped steam channel 34.
During operation, force spiral-shaped steam channel 34 interior contents to move through steam channel 34.At first, force these contents to move to the end 33 of steam channel 34 from the core 31 of spiral-shaped steam channel 34, perhaps force these contents to move to the core 31 of spiral-shaped steam channel 34 from the end 33 of steam channel 34, this will depend on that water is (water is supplied with the position and can be decided from being convenient to the viewpoint that incrustation scale drains or the structure of steam generator 1 and/or the structure of the steam appliance that steam generator was applied to) how to supply with.The second, contents are tending towards the wall rotation along steam channel 34 in the spiral-shaped steam channel 34.And under the influence of centrifugal force, these contents are pushed the outside of the wall of spiral-shaped steam channel 34 to.Because second motion and the motion under the influence of centrifugal force of these contents can guarantee to contact fully between the contents in spiral-shaped steam channel 34 and the steam channel 34, thereby obtain higher relatively heat transference efficiency.In experimental test, have been found that incrustation scale forms annular at the cross section of spiral-shaped steam channel 34, this just confirms to have taken place really second motion of these contents.
Because steam channel 34 spiral-shaped makes that the heating process of contents is very effective in the steam channel 34, and in conjunction with having adopted flat resistive heating element 40, so steam generator 1 can have lighter relatively weight and less design.For example, the size of spiral-shaped steam channel 34 can be little to 3 * 3 millimeters or even 2 * 2 millimeters, and this moment steam generator 1 still can provide steam with for example speed up to 52 grams per minutes.On the other hand, the size of the cross section of steam channel 34 also can be elected 7 * 7 millimeters or even bigger as.Because contents carry out above-mentioned second motion in the steam channel 34, it produces for spirality because of steam channel 34, so even the cross sectional dimensions of steam channel 34 becomes bigger, also can guarantee between the wall of these contents and steam channel 34, to obtain good contact.A very important advantage with steam channel 34 of big cross section is that this steam channel 34 can hold more incrustation scale, thereby can prolong the life-span of steam generator 1.Another advantage is that internal pressure can be lower.
In having the steam channel that more stretches global shape, for example have the steam channel of zigzag shape, the contact in the steam channel between contents and the steam channel wall mainly occurs in the bottom of steam channel under the gravity effect.Be understandable that the heating process efficient that being used for of carrying out produces steam will be lower than the efficient at spiral-shaped steam channel in this steam channel.Therefore, on the one hand this steam channel can not have little cross section to 2 * 2 millimeters, and this on the other hand steam channel can not be applicable in the steam generator of steam iron.And this steam channel also can not have relatively large cross section and can not correctly play a role.
In the spiral-shaped steam channel 34 with the circular, fashion spiralization, sharp deflections does not appear.Thereby advantageously cause the incrustation scale uniform deposition in steam channel 34, and the scale removal life-span of steam generator 1 is longer relatively.When supplying with water in the end 33 of spiral-shaped steam channel 34, contents help to remove incrustation scale at this core 31 to core 31 athletic meeting of steam channel 34 in the steam channel 34.
See that radially this spiral-shaped steam channel 34 comprises a plurality of partition walls, these partition walls are demarcated to the annular section of those steam channels 34 different with respect to the distance at spiral-shaped center.Core 31 at spiral-shaped steam channel 34 is supplied with under the situation of water, a plurality of partition walls is set can prevents that water droplet from leaking out between the top surface 23 of covering portion 10 and main body 20.This is a key character of spiral-shaped steam channel 34, because in industrial application, and the extremely difficult requirement that realizes that the satisfied simultaneously maintenance of the sealing fully between two surfaces is low-cost and produce steam generator 1 in batches.Utilize some barrier ribs to prevent that steam generator 1 from leaking water droplet (this process is also referred to as " splash "), this is used to prevent that than other technological means of splash is all feasible and much preferred.When steam generator 1 is used for so-called steam generator system, wherein steam under pressure is through steam channel 34 conductings in steam generator system, and what be more readily understood this steam channel 34 is spiral-shaped for the advantageous effects that seals between the top surface 23 of main body 20 and covering portion 10.
In spiral-shaped steam channel 34, this respective distance in the zigzag steam channel of the absolute distance between the entrance and exit with equal length.For temperature difference also is same reason.Therefore, the performance of spiral-shaped steam channel 34 is more reliable, and can prevent that main body 20 and/or heating element heater 40 from curling.
Compare with known U-shaped tubular heating element, flat resistive heating element 40 can provide heat in more efficiently mode.Therefore, in many cases, preferably adopt this heating element heater 40.If it is spiral-shaped that steam channel 34 has, then the temperature difference between the entrance and exit of steam channel 34 is enough little, can be so that steam channel 34 is attached to flat resistive heating element 40.If steam channel has zigzag or the another kind of shape that more stretches, then the temperature difference between the entrance and exit of steam channel is much higher, and can not using planar stratie 40, because under the influence of the relative higher temperature in the exit of steam channel 34, these heating element heaters 40 can fracture.
Spiral-shaped steam channel 34 can form as shown in Figure 1, but also can have another kind of shape.For example, steam channel 34 can be that spiral is oval, triangle or square.Obviously, triangle and square not too desirable is because these shapes comprise sharp deflections.
The spiral-shaped shape that is similar to so-called Archimedian screw of the disclosed groove 30 of Fig. 1.Yet, within the scope of the invention, can also adopt the spiral-shaped of other types.It is spiral-shaped that steam channel 34 can have any kind bidimensional, for example, and logarithm spiral, sinusoidal spiral or Euler's spiral.
Spiral-shaped steam channel 34 can be heated in a side, and this is the situation in Fig. 1 and 2 example shown.Yet, heating element heater 40 can also be arranged on other sides of spiral-shaped steam channel 34, for example on the top surface 23 of main body 20.Be not limited to only flat resistive heating element 40 is provided with in the plane; This heating element heater 40 also can be arranged on the peripheral surface 21 of main body 20.In this case, adopt distribution technique in the process on heating element heater 40 being arranged on surface 21.
Usually, the cross section of spiral-shaped steam channel 34 has square configuration.Within the scope of the invention, can also be other shapes, for example triangle, hexagon or irregularly shaped.
Steam generator is applicable to multiple household electrical appliance, and for example steam iron can also be attached in the middle of these household electrical appliance.In Fig. 3, schematically show the top side of the base plate 50 of steam iron.This base plate comprises generator base 15, wherein is provided with spiral slot 30.In this steam iron, generator base 15 utilizes covering portion (not shown among Fig. 3) to cover.Be similar to the main body 20 and the covering portion 10 of the steam generator 1 shown in Fig. 1 and 2, generator base 15 and this covering portion form the channel unit of sealing spiral-shaped steam channel.This channel unit is the part of steam generator unit, and wherein this steam generator unit also comprises at least one flat resistive heating element (not shown among Fig. 3) that is arranged on the generator base 15.
In the embodiment shown, in the operating period of steam iron, water enters spiral-shaped steam channel at its core, and steam leaves this steam channel in its end then.In Fig. 3, water and steam were represented by heavy line through the path that the steam channel of channel unit flows through in steam iron operating period.
Preferably, the base plate 50 that comprises generator base 15 and flank 53,56 forms foundry goods.
In this steam iron, generator chamber 51 and steam distribution chamber 55 are sealed by covering portion (not shown among Fig. 3).In the practical embodiments of this steam iron, can be provided for covering an integral body covering portion of the groove 30 of chamber 51,55 and generator base 15.In steam distribution chamber 55, steam openings 57 is set in base plate 50, so that make steam lead to be positioned at material below the base plate 50, wherein this material promptly needs the material of steam treatment and/or flatiron.
Steam generator according to the present invention can be used for producing more than a kind of steam, moist steam for example, and it is restricted to mixture, saturated vapor and the high-temperature steam of steam and water, and this depends at any steam of moment needs.For this reason, steam generator preferably includes at least two channel units 18 with spiral-shaped steam channel 34, and wherein steam channel 34 is interconnected.The example that is applicable to the steam generator 2 that produces dissimilar steam schematically shows in Fig. 4.
Steam generator 2 shown in Figure 4 comprises bottom channel unit 18a and top channel unit 18b, and in the example shown, these two channel units are identical master-plans.These two channel unit 18a, 18b comprise main body 20, and this main body likeness in form dish type has the squared perimeter that has round edge, and be provided with spiral slot 30 in this main body.And these two channel unit 18a, 18b also comprise the covering portion 10 of main body 20 those sides that are used to cover spiral slot 30 places, therefore form spiral-shaped steam channel 34.The covering portion 10 of channel unit 18a, 18b preferably includes metal.Except spiral slot 30, the main body 20 of channel unit 18a, 18b also comprises circular trough 37, is used to hold the sealing device such as O shape ring, and this circular trough 37 is provided with around spiral slot 30.
In the bottom side of bottom channel unit 18a, be provided with centre bore 11, utilize this centre bore can touch the core 31 of the spiral-shaped steam channel 34 of bottom channel unit 18a.Same, in the top side of top channel unit 18b, be provided with centre bore 11, utilize this centre bore can touch the core 31 of the spiral-shaped steam channel 34 of top channel unit 18b.And two channel unit 18a, 18b comprise interface channel 32, utilize this interface channel can touch the end 33 of spiral-shaped steam channel 34 from the perimeter surface 21 of the main body 20 of each channel unit 18a, 18b.
The covering portion 10 of bottom channel unit 18a is positioned at its top side, and in the bottom side of bottom channel unit 18a, is provided with flat resistive heating element (not shown among Fig. 4), is used for the steam channel 34 interior contents of heated base channel unit 18a.Same, the covering portion 10 of top channel unit 18b is positioned at its bottom side, and in the top side of top channel unit 18b, is provided with flat resistive heating element 40.In the example shown, flat resistive heating element 40 comprises planar resistor heating track, and this planar resistor heats the spiral-shaped identical with steam channel 34 basically of track.
Between the covering portion 10 of channel unit 18a, 18b, be provided with thermal insulation panel 45, this thermal insulation panel comprises the heat insulator such as mica.
In 2 operating periods of steam generator, start heating element heater 40.Core 31 at the spiral-shaped steam channel 34 of top channel unit 18b supplies water to steam generator 2, and moist steam or saturated vapor leave top channel unit 18b through interface channel 32.Subsequently, moist steam or saturated vapor supply to bottom channel unit 18a, wherein steam in the bottom 33 spiral-shaped steam channels 34 that enter bottom channel unit 18a.At last, high-temperature steam leaves bottom channel unit 18a at the core 31 of spiral-shaped steam channel 34.For steam is imported the end 33 of the spiral-shaped steam channel 34 of bottom channel unit 18a from the end 33 of the spiral-shaped steam channel 34 of top channel unit 18b, likes such as body are set, its decomposition at Fig. 4 is not shown.
All steam that do not need to leave top channel unit 18b all supply to bottom channel unit 18a.When steam generator 2 was steam iron a part of, the part of moist steam or saturated vapor can supply to for example spreader nozzle.For distributing steam, can adopt likes such as valve.Channel unit 18a, the 18b of steam generator 2 can have many common traits, but this is optional.Preferably, the design of each channel unit 18a, 18b all is applicable to the steam type that needs acquisition.For example, the steam type that need be provided by channel unit 18a, 18b can be provided the feature of the cross section of steam channel 34.Therefore, in the example shown, for the purpose of high-temperature steam is provided, the design of bottom channel unit 18a can be optimized, and, the design of top channel unit 18b can be optimized for for the purpose of moist steam or saturated vapor are provided.
In Fig. 5, be illustrated schematically in the operating period water and/or channel unit 18a, the 18b of vapor stream warp and the state of water and/or steam of steam generator 2, so that set forth the process that operating period takes place in steam generator 2.
Fig. 6 is the exploded view of steam generator 3, and this steam generator 3 is similar to steam generator shown in Figure 42 to a great extent.In fact, only difference is the quantity of the plate between the main body of channel unit 18a, 18b.In steam generator shown in Figure 42, between the main body 20 of parts 18a, 18b, be provided with three plates, just, covering portion 10, the thermal insulation panel 45 and being used to that is used to cover the top side of bottom channel unit 18a covers the covering portion 10 of the bottom side of top channel unit 18b.In steam generator shown in Figure 63, between bottom channel unit 18a and top channel unit 18b, be provided with only covering portion 41.
Steam generator 2,3 shown in Fig. 4 and 6 comprises two spiral-shaped steam channels 34.According to the present invention, if steam generator comprises an above steam channel 34, then the quantity of steam channel 34 can be higher than 2.
Fig. 7 illustrates according to round steam generator 4 of the present invention, and this round steam generator 4 comprises main body 20, is provided with channel chamber 35 in this main body.In the example shown, by seven bent portions next doors 36 channel chamber 35 is divided into seven spiral-shaped steam channels 34, wherein extend between the periphery of the center of steam generator 4 and steam generator 4 in these seven bent portions next doors 36.In this way, be implemented in the steam channel 34 that extends between the periphery of the center of steam generator 4 and steam generator 4 in a spiral manner.Can know and see that near the position of steam generator 4 peripheries, the width of spiral-shaped steam channel 34 is bigger, and in the position near the center of steam generator 4, the width of spiral-shaped steam channel 34 is less.Therefore, between the normal operating period of steam generator 4,, and leave steam generator 4 at the peripheral steam of steam generator 4 at the central supply water of steam generator 4.
In a side, steam chambers 35 utilizes the bottom 24 of main body 20 to seal.Be similar to the steam generator 1 shown in Fig. 1 and 2, steam generator 4 comprises the covering portion (Fig. 7 is not shown) of the opposite side that is used for covering channel chamber 35, and this covering portion has centre bore, utilizes this centre bore can touch the center of steam generator 4.And steam generator 4 comprises at least one flat resistive heating element (also not shown among Fig. 7) on the outer surface that is arranged on main body 20, is used for contents in the operating period of steam generator 4 heat tunnel chamber 35.
Preferably, use steam promotion means to impel water in steam channel 34, to evaporate.If steam channel 34 is not spiral-shaped, and is provided with steam promotion means, then these devices only are applied to the bottom of steam channel 34, because have only this part to touch contents in the steam channel 34.Yet, itself be exactly that the total inner surface that steam promotion means is applied to steam channel 34 is preferred in the spiral-shaped steam channel 34 according to the part of steam generator 1,2,3,4 of the present invention.This can not change the status quo, and promptly steam promotion means still only is applied to the bottom of steam channel 34.
When being provided with steam promotion means, the efficient of steam generator 1,2,3,4 can increase.And the steam generator 1,2,3,4 with steam promotion means can more preferably satisfy heavy duty requirements.Steam promotion means also has the effect of the splash of preventing.
Can design steam promotion means by any way that can imagine.For example, can come the inner surface of roughening steam channel 34, thereby promote the quantity that water scatters and increases nucleating point by blasting treatment.And, can adopt the commercially available prod to be used for promoting to produce steam.According to another kind of method, can adopt the mechanical technique means, comprise the inner surface that utilizes woven wire, aluminum foam material, fine grid or nail array to cover steam channel 34.According to another kind of method, can also adopt the chemical technology means to be used as steam promotion means, for example anode processing, xylane, QF﹠amp; Ludox.
To those skilled in the art, scope of the present invention is not limited to foregoing example, under the situation that does not break away from the appended scope of the present invention that claim limited, can make multiple modification and modification.
It should be noted that the term " water " that uses above not should be understood to only comprise the pure water (H on the chemical sense
2O) or distilled water, can also comprise any fluid that supplies to steam generator usually, for example the mixture of running water or water and clothes finishing agent.
The simple embodiment of the covering portion 10,41 of channel unit 18 is the plates with flat top surface and planar bottom surface.Yet, this can not change the status quo, promptly, spiral slot can be arranged in the surface of covering portion 10,41, the surface of covering portion 10,41 is used to touch main body 20, wherein the spiral-shaped mirror image symmetric relation that is in of groove 30 in the spiral-shaped and main body 20 of groove in the covering portion 10,41 forms steam channel 34 thereby can mate mutually.
Claims (14)
1. one kind is used for for example steam generator of the household electrical appliance of steam iron (1,2,3,4), comprising:
At least one channel unit (18), this channel unit sealing is used for the spiral-shaped steam channel (34) through this channel unit (18) conducting water and steam, wherein this at least one channel unit (18) comprises main body (20) and covering portion (10), spiral slot (30) wherein is set in this main body (20), and wherein should in the covering portion (10) main body covered at least (20) that part of of this groove (30) be set; And
At least one flat resistive heating element (40) is used to heat the interior contents of steam channel (34) of this at least one channel unit (18), and this steam channel (34) is arranged on the surface of this main body (20) of this at least one channel unit (18).
2. steam generator according to claim 1 (1,2,3,4), wherein this main body (20) of this at least one channel unit (18) is a foundry goods.
3. according to claim 1 or the described steam generator of claim 2 (2,3), comprise at least two channel units (18), the wherein spiral-shaped steam channel (34) of this channel unit (18) interconnection.
4. steam generator according to claim 3 (2,3), wherein this channel unit (18) is arranged to the form of piling up.
5. according to claim 3 or the described steam generator (2 of claim 4,3), comprise at least one pair of channel unit (18), wherein two of this at least one pair of channel unit channel units (18) pile up in opposite direction, so that it is positioned opposite to each other to be provided with the side of main body (20) of spiral slot (30).
6. steam generator according to claim 5 (3), wherein this channel unit (18) is shared a covering portion (41) that is used for the spiral slot (30) of closed channel unit (18).
7. according to each described steam generator (1,2,3) among the claim 1-6, wherein the cross section of this spiral-shaped steam channel (34) equals 3 * 3 millimeters at the most.
8. according to each described steam generator (1,2,3) among the claim 1-6, wherein the cross section of this spiral-shaped steam channel (34) equals 7 * 7 millimeters at least.
9. according to each described steam generator (4) among the claim 1-6, wherein in this main body (20) of this at least one channel unit (18), channel chamber (35) is set, by n bent portions next door (36) channel chamber (35) is divided into n spiral-shaped steam channel (34), wherein extend between the periphery of the center of steam generator (4) and steam generator (4) in this n bent portions next door (36), and wherein n is an integer.
10. according to each described steam generator (1 among the claim 1-9,2,3,4), comprise that the water of the spiral-shaped steam channel (34) that is used for promoting this at least one channel unit (18) changes into the steam promotion means of steam, this steam promotion means covers the entity part of the inner surface of steam channel (34), and described entity part is not only the bottom.
11. a steam iron comprises according to each described steam generator (1,2,3,4) among the claim 1-10.
12. a base plate (50) that is used for steam iron comprises the generator base (15) that is provided with spiral slot (30), and lip-deep at least one flat resistive heating element that is arranged on generator base (15).
13. base plate according to claim 12 (50), this base plate is a foundry goods.
14. a steam iron comprises according to claim 12 or the described base plate of claim 13 (50), and the spiral slot (30) that covering portion is used to seal generator base (15) wherein is set.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04102447.2 | 2004-06-02 | ||
| EP04102447 | 2004-06-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1965123A true CN1965123A (en) | 2007-05-16 |
Family
ID=34968685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005800181063A Pending CN1965123A (en) | 2004-06-02 | 2005-05-26 | Steam generator having at least one spiral-shaped steam channel and at least one flat resistive heating element |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20080040954A1 (en) |
| EP (1) | EP1756349A1 (en) |
| JP (1) | JP2008501399A (en) |
| CN (1) | CN1965123A (en) |
| WO (1) | WO2005118944A1 (en) |
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| FR2641291B1 (en) * | 1989-01-04 | 1991-03-22 | Seb Sa | |
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| FR2731237B1 (en) * | 1995-03-02 | 1997-04-30 | Seb Sa | HEATING STRUCTURE, ESPECIALLY FOR HOUSEHOLD APPLIANCES MADE ACCORDING TO A SANDWICH STRUCTURE AND APPLIANCE CONTAINING SUCH A HEATING STRUCTURE |
| FR2740787B1 (en) * | 1995-11-03 | 1999-06-11 | Moulinex Sa | STEAM IRON |
| EP1337792A1 (en) * | 2000-09-27 | 2003-08-27 | Koninklijke Philips Electronics N.V. | Flow heater |
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- 2005-05-26 EP EP05742005A patent/EP1756349A1/en not_active Withdrawn
- 2005-05-26 CN CNA2005800181063A patent/CN1965123A/en active Pending
- 2005-05-26 WO PCT/IB2005/051724 patent/WO2005118944A1/en not_active Application Discontinuation
- 2005-05-26 JP JP2007514290A patent/JP2008501399A/en active Pending
- 2005-05-26 US US11/569,795 patent/US20080040954A1/en not_active Abandoned
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2008501399A (en) | 2008-01-24 |
| WO2005118944A1 (en) | 2005-12-15 |
| US20080040954A1 (en) | 2008-02-21 |
| EP1756349A1 (en) | 2007-02-28 |
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