WO2006097062A2 - Beheizbares gehäuse, vorrichtung zur erzeugung von dampf und gargerät - Google Patents
Beheizbares gehäuse, vorrichtung zur erzeugung von dampf und gargerät Download PDFInfo
- Publication number
- WO2006097062A2 WO2006097062A2 PCT/DE2006/000313 DE2006000313W WO2006097062A2 WO 2006097062 A2 WO2006097062 A2 WO 2006097062A2 DE 2006000313 W DE2006000313 W DE 2006000313W WO 2006097062 A2 WO2006097062 A2 WO 2006097062A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- steam
- recess
- housing
- wall
- heating
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
- F22B1/284—Methods of steam generation characterised by form of heating method in boilers heated electrically with water in reservoirs
Definitions
- Heated housing apparatus for producing steam and cooking appliance
- the invention relates to a heatable housing for a device for generating steam with at least one wall which delimits an interior at least partially surrounded by the housing for receiving a liquid to be evaporated, a device for generating steam and a cooking appliance with such a device.
- the first volume fraction is limited by the size of the radiator and the space between the radiators for flushing the same and for the removal of vapor bubbles required space.
- the size of the radiator in turn is determined at a given heat output by the Leidenfrost effect, according to which when heating a vaporizable liquid a certain surface power density of a radiator can not be exceeded, otherwise forms a closed vapor layer between the surface of the radiator and the liquid, the hinders heat dissipation.
- the Leidenfrost effect is beautifully demonstrated by the fact that water droplets on a glowing plate do not evaporate immediately, but rather move in a dancing manner, as they move irregularly on the plate, supported by a forming vapor layer.
- the second volume fraction is needed to separate steam from entrained water droplets.
- the size and configuration of the second volume fraction, ie the gas space above the liquid, are decisive for the steam quality.
- the quality of the steam is determined in particular by the size of the surface of the water, which must be passed by the steam flow. Because the larger the steam flow per water surface, the more water is entrained by the exiting steam.
- steam generators are known in which the entire tubular or barrel-shaped steam generator container is set in rotation, which is associated with high energy and cost, and also calls for a high structural complexity, which makes a rotating storage of the steam generator tank required, which inevitably only prove via the axis a fluid supply and removal as practicable.
- DT 2 214 566 for example, such a rotary steam generator is described, which is designed for the evaporation of organic driving fluids in a closed circuit of a Rankinemotors.
- the known from DE-PS 904 653 steam generator but in addition has a regulation for liquid feed for the purpose of setting a liquid ring of certain strength.
- a rotating steam generator is disclosed with a rotatably mounted boiler, the construction part waived rotatable feedthroughs for the introduction or removal of a fluid working medium.
- a tandem separator for a steam-water mixture is known, in the helically wound baffles put the steam-water mixture in rotation.
- the steam generator described above do not work satisfactorily, but have the serious disadvantage that the dissolved minerals contained in tap water, especially lime, deposit on the walls and fittings of the steam generator. This can lead to failure or damage to the steam generator, which can usually only be prevented by regular chemical descaling. The resulting, necessary, after-plant maintenance work are again costly.
- WO 02/12790 A1 describes a method for producing steam, in particular for a cooking appliance, in which a liquid within a steam generating container is brought to a boil by heating at least one heatable wall surface of the steam generating container, during heating by at least a rotatably mounted in the steam generating container first rotor is set in rotation and is pressed by centrifugal forces due to the rotation against the heated wall surface, and the resulting by evaporation of at least a portion of the liquid vapor escapes from the steam generator through a steam outlet and entrained with the steam drops of Liquid are deposited.
- WO 02/12790 A1 discloses a device for producing steam, in particular for a cooking appliance, comprising a steam generating tank, which can be filled at least partially with a liquid via an inlet and from which steam can reach a steam outlet, and a heating device for heating the steam Liquid in the steam generating container for the purpose of steam generation, comprising a generic heatable housing, wherein the device comprises a first rotor in the steam generating container, via which at least the liquid is set in rotation.
- the object relating to the heated housing is achieved in that the wall comprises at least one recess for receiving at least one heating device.
- a plurality, preferably at least three, heaters are provided, the heaters are distributed in particular equidistant and / or concentric to the, preferably rotationally symmetric, interior.
- each recess is designed in the form of at least one bore which at least partially penetrates the wall, preferably in the form of at least one blind bore. It may in turn be provided that the interior of the housing facing surface of the wall is substantially closed, in particular each bore does not penetrate the interior of the housing facing surface of the wall.
- the surface of the wall remote from the interior of the housing has at least one first recess between at least two adjacent heating devices and / or at least one second recess and / or at least one third recess in the region of at least one heating device.
- every second recess in the region of a heater opens into an associated recess and preferably at least partially closed, in particular pressed, is for fixing the heater in the recess.
- every third recess in the region of a heating device opens into a first recess, but does not open into a recess, wherein preferably every third recess constitutes a scarfing channel.
- each heating device comprises at least one heating wire which can be flowed through by an electric current, wherein the heating wire is preferably surrounded at least in regions by at least one first cladding tube.
- the first cladding tube forms a cladding of at least one immersion heater insertable into a recess, wherein preferably the outer geometry of the cladding, in particular at least one outer dimension, such as an outer diameter of the cladding, substantially the inner geometry of Recess, in particular at least one inner dimension, such as an inner diameter (de), the recess corresponds.
- the first cladding tube of the heating element at least partially a, especially stainless, stainless steel, such as Incoloy includes.
- the first cladding tube is formed by a recess enclosed by the wall.
- the heating device comprises at least one second cladding tube at least partially surrounding the heating wire, wherein preferably the heating wire, in particular for the equidistant positioning of the same within the first cladding tube, together with the second cladding tube in the first cladding tube einbowbar.
- At least one intermediate space between the heating wire and the first cladding tube and / or the second cladding tube and / or at least one intermediate space between the second and the first cladding tube can be filled at least in regions with at least one filling material.
- the filler material and / or the second cladding tube at least one, in particular electrically insulating and / or thermally conductive, preferably powdered and / or compressed, material such as magnesium oxide, magnesium nitride, aluminum oxide, aluminum nitride, beryllium oxide, beryllium nitride, silicon oxide and / or silicon nitride.
- the first cladding comprises aluminum or copper.
- the housing comprises aluminum, beryllium, caclium, iron, gold, iridium, copper, magnesium, silver, silicon, tungsten and / or zinc and / or is formed as a continuous casting.
- the invention further proposes that at least one geometric dimension of the first cladding tube to avoid at least one air gap between the first cladding tube and the housing and / or the second cladding tube and / or for compressing the filling material is variable, preferably the diameter and / or the length of the first cladding tube is variable or are, in particular by applying a compressive or tensile force.
- the wall at least partially, preferably in the region of each recess, a material with a thermal conductivity of more than 75 W / m * K, better of more than 100 W / m * K, more preferably more than 150 W / m * K and most preferably more than 200 W / m * K at a temperature of 300K.
- the heater has a heat output of more than 0.5 kW, better of more than 0.8 kW, more preferably more than IkW and most preferably more than 1.5 kW.
- the maximum surface load of the heater is more than 15 W / cm 2 , preferably at least 48 W / cm 2 .
- Heatable housing according to the invention may also be characterized in that the interior of the housing with its inner wall surface at least partially surrounded interior is substantially cylindrical, preferably has a diameter (d ß ) of about 60mm, and / or the housing at least partially a substantially cylindrical Outside wall surface, preferably with an outer diameter (d A ) of about 88 mm.
- Preferred embodiments of the invention may also be characterized by at least one temperature sensor and / or thermal switch, in particular in thermal contact with the wall, and / or a control and / or regulating device in operative connection with each heater for setting the same, preferably in dependence on output data of the Temperature sensor and / or thermal switch.
- the one apparatus for producing steam in particular for a cooking appliance, comprising at least one container having an interior which is at least partially fillable via an inlet with a liquid, in particular water, which can be heated from the steam to a steam outlet feasible is and which is at least partially emptied via a drain, the object in question is achieved in that the container comprises at least one inventive heatable housing.
- the liquid is at least during heating by means of at least one mounted in or on the interior of the housing rotor in rotation, preferably the .Flüsstechnik due to the centrifugal forces acting through the rotation against the wall of the heated housing can be pressed.
- the rotor comprises at least one paddle which is drivable via a shaft connected to a motor, wherein the shaft is composed in particular of a motor shaft and a paddle shaft connected thereto, in particular releasably.
- the interior is rotationally symmetrical to a longitudinal axis with two open ends, in particular at least partially substantially cylindrical, wherein preferably the shaft extends along the longitudinal axis of the interior and / or the longitudinal axis is preferably aligned parallel to the direction of the gravitational force ,
- At least one paddle longitudinal side at least partially, preferably in the form of Paddellippen or paddle teeth, at least temporarily touches the wall surface of the container.
- the interior is closable, preferably detachable, closable at its one, preferably upper, end by a first cover, and preferably closable at its other, preferably lower, end by a second cover.
- the first cover houses the engine and / or the steam outlet.
- the invention further proposes that the second lid houses the drain and / or the steam outlet, wherein preferably the steam outlet and the drain are provided in one.
- a separation of vapor and liquid is istheral via a siphon and a Streigrohr downstream of the second lid.
- Devices according to the invention may be characterized in that the first and / or second cover can be screwed to the container, preferably by utilizing each third recess as a screw channel. Furthermore, it can be provided that the first and / or second lid can be latched to the container, preferably by utilizing at least one spring element.
- the shaft is mounted in the first cover and spreads in the direction of the second cover, wherein the shaft extends at least over half the distance between the first and second cover.
- the invention also proposes that the inlet enters the first lid or the container.
- first and / or second lid is made of a rotary or cast part, preferably made of aluminum, or are.
- control and / or regulating device is in operative connection with the motor, a first closing element in the inlet, a second closing element in the outlet, a third closing element in the vapor outlet and / or at least one pressure sensor.
- the task relating to a cooking appliance with a control and / or regulating unit is achieved by the use of at least one device according to the invention for generating steam, in which the control and / or regulating unit carries the device for generating steam, wherein preferably the control - And / or control unit and the control and / or regulating device are executed in one.
- the device for generating steam by means of rubber-mounted screw is mounted with low vibration in the region of its center of gravity in the cooking appliance.
- the invention is thus based on the surprising finding that the heating power density emitted by the housing can be increased by integrating a heating device into a wall of a housing.
- a heating device into a wall of a housing.
- the heat transfer be increased significantly. Due to the power provided by such heating cartridges or heating elements, the number of heaters necessary to achieve a predetermined heating power can be reduced, thereby enabling a more compact structure of the housing or the device for generating steam.
- the present invention proposes, in a particularly advantageous embodiment, the following way of further increasing the heating power that can be provided by the heating device.
- the heating device is not formed in the form of a heating cartridge comprising a heating wire, which is surrounded by a sheath which is inserted into the recess, but in the form of a heating wire, which is inserted directly into the recess, the remaining space within the Recess is preferably isolated by means of a corresponding electrically insulating (filling) material.
- This increase in the possible heating power is due to the fact that when using cartridge heaters, an air gap between the sheath and the recess may be present within the housing wall, whereby the achievable by the heating cartridge power is limited to avoid local overheating.
- the heater may be formed as a whole longer than the recess, so that it is pressed by insertion of an axial pressure against the recess after insertion into the recess.
- a recess for a heating device or heating cartridge can open to the outside via a further recess in the housing.
- This further recess not only allows easy use of the heater or immersion heater in the housing, but also an increase in the same seat in the housing, namely by at least partially compressing said recess after insertion of the heater or immersion heater, which in turn reduces the risk of air gaps between the Heating device or heating cartridge and the housing is avoided, which is the better heat conduction.
- the centrifugal forces of the liquid and / or the vapor are greater than the gravitational forces of the liquid and / or the vapor.
- the liquid and the steam are at least partially forced against at least one aperture, potential vortex in the liquid and / or the vapor are at least partially generated and / or no heating of the heatable wall of the container takes place.
- the liquid is fed into the container at a minimum velocity, preferably directed to the heatable wall surface and / or the first rotor.
- the level of the container is determined by measuring a centrifugally induced pressure on at least one wall surface of the container, preferably from outside the container.
- At least one pressure sensor may be provided for detecting a pressure prevailing in the liquid, in particular in the region of a wall of the steam generating container, wherein it has proved to be particularly advantageous to control the heating power of at least one heating device or heating cartridge as a function of values measured by means of the pressure sensor set, preferably for setting a constant pressure along the wall of the steam generating container, in particular to prevent the formation of deposits, such as in the form of a layer of lime, on the wall.
- At least one temperature sensor and / or thermal switch may be provided, in particular in thermal contact with the wall, preferably via the output data of the temperature sensor, in particular their time course, deposits, such as a limescale, on the wall, in particular on the interior facing Surface of the wall are detectable. This makes it possible to interrupt the operation of the heater (s) depending on the detection of deposits.
- the housing in particular between the areas in which heaters are mounted, are provided with recesses.
- a further embodiment of the method is characterized in that in the vapor escaping from the steam generating vessel condensed and / or vaporized liquid in at least one further downstream of the steam generating container keitsabscheidungs employer is rotated by a second rotor, and deposited condensate and from the sosstechniksabborgungs constituer is derived, preferably the steam generator tank is returned.
- first rotor in the steam generating container and the second rotor in the liquid separation tank via a motor, preferably offset over the same axis of rotation in rotation.
- the steam may be at least partially supplied to the steam outlet through a tube disposed in the steam generating vessel, preferably in the form of a hollow shaft in communication with the rotor (s).
- the first and / or the second rotor at least during its rotation or at least partially grinding contact to the wall surface or deposits on the wall surface of the steam generating container or liquid separation container and / or have the deposits, in particular in the form of calcifications, at least partially dissolves or loosen the wall surface.
- the distance between the first and / or second rotor and the associated wall surface is dimensioned so small that a forming deposit, in particular a calcification, is removed during rotation of the first and second rotor.
- the first and / or second rotor has no contact with the corresponding wall surface in the idle state and is pressed due to centrifugal forces in a rotation at least partially in the direction of the corresponding wall surface or become.
- the wall surface and / or the rotor is dry-heated after an operating phase and / or a wetting with liquid with rotating and / or stationary rotor, wherein adhesion of the rotor to the wall surface is avoided by deposits.
- the steam generating container in the idle state of the first rotor preferably independently, emptied, in particular via a vapor-tight drainage.
- the inlet made of a flexible material and is deformed by the pressure of the incoming liquid to at least partially solve deposits in the inlet.
- the feed is cooled by a liquid stream which is maintained continuously via a control and / or regulating device, wherein the liquid is taken from a reservoir and / or a feed line and deposits are at least partially prevented.
- the container in the device for generating steam, has two opposite ends, wherein the inlet and the steam outlet are arranged either both at one end or at each other at one end.
- the steam outlet and a liquid outlet are provided at one end, preferably at a lower end, so that by the action of the gravitational force emptying of the container is possible while an inlet either in the region of the container or on other, upper, end of the container is arranged.
- the first rotor which then also preferably is the only rotor, may then comprise a paddle whose shaft is detachably connectable to the shaft of a motor, which motor may in turn be provided in a lid of the housing for closing the upper end ,
- This upper cover can for example also be screwed directly to the housing, for which purpose already screw channels can be provided in the housing.
- the paddle can be made so light that it is no longer storable at the bottom of the housing, so that can be completely dispensed with a warehouse within the range in which steam, water / liquid and / or lime can be arranged , which increases the life of the steam generator tank overall.
- the separation of steam and water downstream of the lower end of the housing can be done in the latter embodiment via a simple siphon.
- a branch with a riser can be attached, through which the steam can escape and a cooking chamber of a cooking appliance can be supplied.
- the entrainment of water in the steam can be ensured by means of a corresponding dimensioning of the riser pipe and possibly also by means of a corresponding shaping of this pipe.
- a device according to the invention can thus be characterized by an opening for preferably automatic emptying of the liquid at standstill of the rotor and / or a third aperture in the region of the steam generating container with the lowest gravitational potential, wherein the opening during rotation through a closure mechanism, for example comprising a siphon , is closed.
- the steam generating container is rotationally symmetrical about an axis, preferably substantially tubular or conically widening from the inlet to the steam outlet is.
- a device may also be characterized in that the axis of the steam generating container coincides with the axis of rotation of the first rotor, wherein preferably the axis of rotation is substantially parallel to the direction of the gravitational force.
- a device which is characterized by at least one aperture for separating vapor-entrained droplets of the liquid and / or contaminants in the liquid.
- a first orifice downstream of the inlet and / or a second orifice upstream of the outlet is or are arranged.
- the first rotor can be driven by a motor via a shaft, wherein the shaft is in particular a hollow shaft with radial bores and / or slots arranged along the longitudinal side of the hollow shaft in order to transfer steam from the steam generation container to the steam outlet to enable.
- an apparatus may be characterized by a liquid separation tank between the steam generation tank and the steam outlet, wherein preferably liquid return from the liquid separation tank extends to the steam generation tank.
- a second rotor is rotatable, which is preferably mechanically coupled to the first rotor.
- the first and / or second rotor comprises a detachment device which dissolves deposits during rotation at least partially from a wall surface of the steam generator tank or liquid separation tank.
- the removal device brushes, fins, fringes and / or lips, preferably of food-safe, heat-resistant material comprises.
- the removal device has at least partially a material reinforcement on its side which is closest to the wall surface during rotation.
- the removal device has no contact with the wall surfaces in a stationary state, but on rotation, preferably on the use of at least one suspension.
- the first and / or second rotor in the form of a paddle is or are helical, helical and / or star-shaped.
- the rotor itself is flexible, preferably designed in the form of brushes, fins, fringes and / or lips and in the stationary state has no contact with the wall.
- reducing the moment of inertia thereby reducing energy consumption, reducing response times, reducing control times, reducing bearing forces and reducing balance problems; and ii) simplification of the structure, for example, by simplifying the installation and contacting a heater, and the avoidance of structurally complex designs, as are common in rotating outer containers to handle, inter alia, rotatable leads.
- Figure 1 is a perspective, schematic view of a first embodiment of a heatable housing according to the invention
- Figure 2 is a side view of the housing of Figure 1 from direction A;
- Figure 3 is a schematic partial sectional view of the housing of Figure 2 along the
- Figure 4 is an illustration of the first embodiment of a housing according to the invention with a heating cartridge
- Figure 5a is a schematic partial sectional view of a second Aus.ungsform a housing according to the invention with a further embodiment of a heating device according to the invention;
- FIG. 5b shows an enlargement of the detail C of FIG. 5 a
- FIG. 6a shows a partial sectional view of the housing of FIG. 5a with a further embodiment of a heating device according to the invention
- FIG. 6b shows an enlargement of the detail D of FIG. 6a
- FIG. 7 shows a sectional view through a first embodiment of a steam generator according to the invention with a stationary rotor
- FIG. 8 is a sectional view through a second embodiment of a steam generator with a stationary rotor according to the invention.
- FIG. 9 shows a sectional view through a third embodiment of a steam generator according to the invention with a stationary rotor
- FIG. 10a shows a first partial sectional view through a fourth embodiment of a steam generator according to the invention with a stationary rotor
- FIG. 10b shows a side view of the steam generator shown in FIG. 10a.
- 10c is a sectional view of the Damfperzeugers shown in Figure 10b along the section line E.
- FIG. 1 shows a schematic view of a heatable housing 1 according to the invention.
- the housing 1 is formed substantially tubular and has a wall 3.
- the wall 3 surrounds an interior space 5.
- a plurality of recesses in the form of holes 7 is formed within the wall 3, a plurality of recesses in the form of holes 7 is formed.
- the bores 7 penetrate the wall 3 of the housing 1 completely along the entire longitudinal axis of the housing 1.
- the bores 7 extend essentially parallel to the surface of the wall 3 facing the interior 5.
- the bores 7 are regularly distributed over the circumference of the wall 3.
- the housing 1 eighteen holes 7, ie the angular distance ⁇ between the holes 7 is approximately 20 °.
- the housing 1 may for example have the following dimensions.
- the outer diameter d A of the substantially tubular wall 3 is for example 88 mm, while the inner diameter de of the wall 3 is about 60 mm.
- the holes 7 may have a diameter of about 6.5 mm, and be arranged at a distance of about 37 mm from the center M.
- FIG. 3 which shows a sectional view of the housing 1 from the direction B in FIG. 2, the length of the housing 1 is for example 250 mm.
- FIG. 4 shows a plan view of the housing 1.
- a heating device in the form of a heating cartridge 9 is partially inserted into one of the bores 7.
- the heating cartridge 9 comprises a first cladding tube in the form of a sheath 11.
- this sheath 11 is made of a stainless steel material.
- the heating element 9 within the casing 11 comprises a heating wire, not shown, of the supply lines 13 a, 13 b can be supplied with electrical energy for generating a heating power.
- the heating cartridge 9 comprises a signal line 15 which is connected to a temperature sensor, not shown, covered by the heating cartridge 9.
- the local temperature of the heating element 9 and the wall 3 in the region of the bore 7, in which the heating element 9 is located are measured.
- the signal line 15 is connected to a regulating and / or control device, not shown, wherein preferably by means of the control and / or regulating device upon detection of a corresponding Kalk Anlagen the operation of the (rotary) steam generator is set.
- the outer diameter of the casing 11 substantially corresponds to the inner diameter of the bore 7.
- the sheath 11 is made of a stainless steel material which allows re-grinding of the sheath 11 to match the outer diameter of the sheath 11 to the inner diameter of the bore 7.
- the wall 3 is at least partially made of aluminum.
- the heating cartridge 9 is filled within the casing 11 adjacent to the heating wire, not shown, with a substantially electrically insulating, but thermally conductive filling material. It is preferred that the sheath 11 is filled with magnesium oxide as filler.
- the use of a stainless steel material as a casing 11 is expensive, and the adaptation of the outer diameter of the casing 11 to the diameter of the bore 7 leads to a complex production process, since the outer diameter of the casing 11 must be made with very tight tolerances.
- heating cartridge 9 With correspondingly high heating powers of the heating cartridge 9, wherein preferably eighteen heating cartridges 9 with a respective heating power of IkW can be used in the housing 1 shown in FIG. 4, local overheating of the heating cartridges can occur above surface loads of 22 W / cm 2 . As a result, a shortening of the life of the heating element 9 is possible. Due to the use of different materials for the casing 11 and the wall 3, in particular, different expansion of the wall 3 and the heating cartridges 9 may occur in such overheating, which may cause the heating element 9 jammed in the hole 7 and not without can be pulled out of the hole 7 within the wall 3 further.
- FIG. 5 a shows a partial sectional view of a housing 51
- FIG. 5 b shows a detail view of the detail C of FIG. 5 a, in which the structure of the heating device is shown in greater detail.
- the housing 51 comprises a wall 53, in which a plurality of bores is formed, wherein in the figures 5a and 5b, only one bore 57 is shown.
- the wall 53 is made of a metal with high thermal conductivity, such as aluminum, so that the housing 51 is preferably formed in the form of an aluminum profile.
- a heating wire 59 is inserted directly inside the (blind) bore 57.
- the intermediate space formed between the heating wire 59 and the inner wall of the bore 57 is filled with a filling material 61, preferably magnesium oxide powder.
- a compression of the filling material 61 can be achieved in particular by appropriate shaking or pressing the filling material 61 into the bore 57.
- This embodiment of the heater has the particular advantage that the heater can be replaced individually in case of malfunction, without the entire housing 51 must be replaced.
- FIGS. 6a and 6b show a further preferred embodiment of a heating device which is introduced into the housing 51.
- Fig. 6b is a detail view of the detail D of Fig. 6a.
- this heater is dispensed with the use of an additional first cladding tube in the form of a shell 11 or the first cladding tube is formed by the wall 53 of the housing 51 itself.
- a heating wire 73 having leads 71a, 71b is introduced into the bore 57 in the heating device shown in FIG.
- the heating wire 73 is first introduced into a second cladding tube 75, preferably made of magnesium oxide, prior to insertion into the bore 57, and the space created within the second cladding tube 75 Inner wall of the second cladding tube 75 and the heating wire 73 is preferably filled with magnesium oxide powder as filler 77. Subsequently, we introduced the second cladding tube 75 together with the heating wire 73 into the bore 57.
- a second cladding tube 75 preferably made of magnesium oxide
- the respective heaters are inserted into the holes 57.
- an external force on the housing 51 for example by a tensile or compressive load on the housing 51, there is a deformation of the wall 53, which causes a reduction in the diameter of the bore 57 in particular.
- this reduction of the diameter of the bore 57 there is a higher compression of the filling material 61 and 77.
- the outer circumference of the second cladding tube 75 adapts to the inner diameter of the bore 57, whereby any existing air gaps between the second cladding tube 75 and the inner wall of the bore 57 are removed.
- the aluminum profile forming the housing 51 is pulled or pressed in such a way by means of a die that a change in the shape of the wall 53 occurs.
- the housing 51 forming aluminum profile can be edited by means of hydraulic presses. In this case, for example, introduced in the Imienraum of the housing 51, a molding and on the wall 53 from the outside a pressure to be exerted, which leads to a longitudinal expansion of the housing 51 and a reduction in the diameter of the bore 57.
- a significant advantage of the heating devices shown in Figures 5a, 5b, 6a and 6b is that by the direct filling of the holes 57 of the housing 51 with the heating wires 59 and 73, a higher surface load of the heaters due to the omission of a corresponding first cladding tube in the form of the sheath 11, as provided in the heating cartridge 9, can be achieved.
- there is a good transfer of heat from the heating wire 59 or 73 in the wall 53 since the thermal resistance, which may be increased due to air caused by manufacturing tolerances, is significantly reduced.
- the heating power provided by the heater and thus the surface temperature thereof can be increased without fear of material failure of the heating wire 59 or 73.
- the surface load can be increased up to 35 W / cm 2 , as long as a corresponding heat dissipation from the wall 53 is ensured, for example, in a liquid within a steam generator.
- the paddle 108 has two paddle halves 108a each with paddle longitudinal sides 108b adjacent to the wall surface 112 of the water boiler 102, in the region of the aperture 105 a recess 115 and a baffle plate 116 to produce a potential vortex in front of the diaphragm 105 on.
- a waste water outlet 117 having a collar 118 to prevent water leakage through flow in a boundary layer.
- the waste water outlet 117 is closed only by a siphon 119 in order to avoid steam losses, so that the water boiler 102 empties itself when the paddle 108 is at a standstill.
- water is supplied to the water boiler 102 via the water inlet 103 and is rotated by the paddle 108 rotating about the rotation axis 107 in order to force it against the wall surface 112 of the water boiler 102 heated by the heating elements 106 which results in a quick and even heating of the water.
- the paddle halves 108a held at rest by springs (not shown) in their rest position shown in FIG. 7, on the longitudinal sides 108b of which are fine flexible lips (not shown) are forced against the wall surface 112 of the water vessel 102 by the rotation.
- the contact pressure is dimensioned so that the lips only lightly grind over the wall surface 112.
- the longitudinal sides 108 b may have reinforcements in order to achieve the best possible long-lasting release effect with little wear or, in the case of flexible design of the rotor of the detachment device, the ends of the elastic lips used be reinforced in order to increase the contact pressure during rotation against the wall surface 112.
- both dirt of the water as well as with the generated steam entrained water droplets which due to the rotation of the paddle 108 against the Wall surface 112 of the rohrformigen water boiler 102, prevented from emerging with the steam from the steam outlet 104.
- the geometry at the aperture passage can be designed to increase the separation rate of vapor and liquid so that a potential vortex is induced, which can be amplified by the upstream baffle plate 116.
- the water boiler 102 is therefore followed by a water separation chamber 120, which removes entrained water and is delimited by a second orifice 121.
- this water separation chamber 120 rotates a second paddle 122, which is driven by the same shaft 113 as the paddle 108 and which also has a recess 123 and a baffle plate 124 to produce a potential vortex.
- the water droplets separated on account of the rotation generated by the paddle 122 are returned to the water boiler 102 via a water return 125 in the form of a pipe or hose line.
- All other components of the steam generator 101b according to the invention according to FIG. 8 correspond to the steam generator 101a according to the invention according to FIG. 7.
- FIG. 9 shows a further steam generator 101c according to the invention, in which additional measures are implemented in order to reduce water intake with a small boiler diameter, identical components being provided with identical reference symbols.
- the paddle 108 is here driven by a hollow shaft 126, which serves simultaneously to direct the generated steam from the water boiler 102.
- the shaft 126 is supported, whereby it can taper to a correspondingly thinner solid shaft.
- the hollow shaft 126 is guided by a seal or vapor-tight storage 127 from the kettle 102 into an overlying Dampfauslrawhunt 128.
- the hollow shaft 126 has the holes 129b to allow the generated steam to escape again and feed the steam outlet 104.
- the hollow shaft 126 is again led out at the other end of the steam outlet chamber 128 with a seal or vapor-tight bearing 127 ', wherein the hollow shaft 126 in or above the Dampfauslrucschembl 128 can go into a thinner solid shaft.
- the hollow shaft 126 is coupled to the motor 111 via a coupling 114 for compensating for alignment errors between the motor axis and the hollow shaft 126.
- the level of the steam generator 101a, 101b or 101c can be detected by measuring a centrifugal force induced pressure on the inner and / or outer wall of the boiler 102.
- a water pressure sensor is disposed near the inner and / or outer wall of the water boiler 102 and the detected by means of the water pressure sensor water pressure, the heating power of the heating elements 106 by a control and / or control unit, not shown, both with the Water pressure sensor and the heating elements 106 is connected is set.
- a control and / or control unit not shown, both with the Water pressure sensor and the heating elements 106 is connected.
- a descaling of a steam generator 101a, 101b or 101c according to the invention is effected by the flexible lips on the paddle longitudinal sides 108b of the paddle halves 108a, which continuously remove the deposits from the outer wall during operation.
- the lips themselves do not significantly wear off, as they themselves calcify in the area of the immersion in the water film and so scrapes mainly lime on lime.
- the paddle 108 can not accumulate too much lime since it is driven outward by the centrifugal force. ben and finally scraped there. The resulting lime must be removed from the kettle regularly by rinsing or changing water.
- the use of flexible lips as a detachment device or the flexible design of the rotor per se has the advantage that can not be adhered to any possible deposits of the rotor with the wall surface 112 in the idle state, since the centrifugal force during rotation, the contact of the rotor or the release device for Wall surface 112 produces.
- the lower end of the kettle 102 may be provided with another shutter or a shutter mechanism (not shown). In this case, the aperture 105 upstream of the steam outlet 104 can be combined with just such an aperture.
- FIGS. 10a to 10c show a further device according to the invention in the form of a steam generator 101 'd.
- the steam generator 101 'd differs to a considerable extent from the variants described above.
- a boiler 102 'of the steam generator 101'd which is substantially tubular and aligned with its longitudinal axis parallel to the direction of gravitational force, has a water inlet 103' in its central region between its two ends.
- the steam outlet and the water drain are formed in one, namely in the form of a steam and water outlet 104 'at the lower end of the kettle 102', in a lower lid 130'b.
- a motor 111 ' is arranged, the shaft 113' extends into the water boiler 102 'and there screwed to the shaft of a paddle 108'.
- the paddle 108 ' in turn comprises two paddle halves 108'a, each with paddle longitudinal sides 108'b, which have paddles 108'c, with which the paddle 108' can contact the inner wall 112'a of the water vessel 102 ', in particular in operation, ie scrape off the wall surface 112'a upon rotation of the paddle 108 ', limescale and the like.
- the shaft 113 ' is further supported by only one bearing 109' at the upper end of the kettle 102 'and, together with the paddle shaft, does not even extend over half of the kettle 102' along its longitudinal axis, which coincides with the axis of rotation 107 'of FIG Paddle 108 'coincides, as can be seen in particular from Figure 10a.
- the upper lid 130'a is screwed onto the kettle 102 ', wherein in the boiler 102' screw channels 112'd, which can be seen in particular in Figure 10c, are provided.
- the lower lid 130'b can simply be mounted on the kettle 102 'via springs 131'. be clamped, as shown in particular in Figure 10b. This simple construction with lids 130'a and 130'b detachable from the kettle 102 'results in a particularly compact construction.
- the separation of steam and water downstream of the lower lid 130'b is not shown in Figures 10a and 10b, but may be via a simple siphon. Above such a siphon, a branch can be attached, can be passed through the steam via a riser in a cooking chamber, not shown, a cooking appliance. The entrainment of water in the steam can be adjusted by the dimensioning of the riser pipe and possibly also by its shape.
- the kettle 102 'as well as its lids 130'a and 130'b may be formed as aluminum castings and, after assembly, may be connected to a cooking device structure in a vibration-poor manner near the center of gravity of the steam generator 101'd by means of a rubber-mounted, not-shown fitting.
- heating elements 106' are arranged equidistant from each other, each in a recess within the kettle 102 '.
- recesses 112'c are arranged in the outer wall surface 112'b, which lead to a reduction of the material as well as the mass of the water boiler 102 '. This material saving allows for temperature dependent expansion and contraction of the kettle 102 'to such an extent that chalk layers may peel away from the inner wall surface 112'a of the kettle 102'.
- the individual heating elements 106 ' are connected via cables 132'a and 132'b to a control device (not shown) of a cooking appliance, not shown, as well as the motor 111'.
- a control device not shown
- three thermal switches 133 ' are provided, depending on which the heating elements 106' are controllable via the control device.
- a pressure sensor not shown, by means of which the pressure within the water boiler 102 ', for example at different heights, can be detected in order to be able to use these values in the regulation of the heating elements 106' as well as of the motor 111 '.
- heating elements instead of six heating elements you could also z. B. use three heating elements. These would then preferably be arranged at an angle of 120 ° to each other within the kettle. With an exemplary length of 235 mm per heating element, an actual heatable length of the boiler of approximately 200 mm and a diameter of 20 mm per heating element, there is an area load of approximately 8 W / cm 2 on the heating element surface when each heating element has a power of 6 kW.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cookers (AREA)
- Commercial Cooking Devices (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06705996A EP1859199B1 (de) | 2005-03-15 | 2006-02-21 | Beheizbares gehäuse, vorrichtung zur erzeugung von dampf und gargerät |
US11/908,884 US7856170B2 (en) | 2005-03-15 | 2006-02-21 | Device for producing steam and cooking appliance |
JP2008501147A JP2008533421A (ja) | 2005-03-15 | 2006-02-21 | 加熱可能なハウジング、蒸気を発生する装置、及び加熱調理器具 |
DE502006002065T DE502006002065D1 (de) | 2005-03-15 | 2006-02-21 | Beheizbares gehäuse, vorrichtung zur erzeugung von dampf und gargerät |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005012219.1 | 2005-03-15 | ||
DE102005012219A DE102005012219A1 (de) | 2005-03-15 | 2005-03-15 | Beheizbares Gehäuse, Vorrichtung zur Erzeugung von Dampf und Gargerät |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006097062A2 true WO2006097062A2 (de) | 2006-09-21 |
WO2006097062A3 WO2006097062A3 (de) | 2007-02-08 |
Family
ID=36933820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2006/000313 WO2006097062A2 (de) | 2005-03-15 | 2006-02-21 | Beheizbares gehäuse, vorrichtung zur erzeugung von dampf und gargerät |
Country Status (6)
Country | Link |
---|---|
US (1) | US7856170B2 (de) |
EP (1) | EP1859199B1 (de) |
JP (1) | JP2008533421A (de) |
CN (1) | CN101160492A (de) |
DE (2) | DE102005012219A1 (de) |
WO (1) | WO2006097062A2 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104949090B (zh) * | 2014-11-08 | 2017-08-15 | 苏州诚河清洁设备有限公司 | 一种蒸汽发生器以及蒸汽清洁设备 |
CN104474563A (zh) * | 2014-12-03 | 2015-04-01 | 钱军 | 无真空泵脉动真空高温高压灭菌方法及其灭菌器 |
CN104562611B (zh) * | 2015-02-03 | 2017-01-11 | 苏州市轩德纺织科技有限公司 | 一种即热式挂烫机 |
CN104562609B (zh) * | 2015-02-03 | 2017-03-15 | 江苏中威重工机械有限公司 | 一体式净化蒸汽挂烫机 |
CN105011777A (zh) * | 2015-08-10 | 2015-11-04 | 侯昭勇 | 延时滴管式蒸汽发生器和基于该发生器的食物制作设备 |
US20170095105A1 (en) * | 2015-10-05 | 2017-04-06 | Joseph R. Clark | Mini steam generator for cooking food, modular cooking appliance, and modular food preparation station |
FR3046924B1 (fr) * | 2016-01-21 | 2018-01-12 | Seb S.A. | Procede de cuisson d'un aliment |
KR101876117B1 (ko) * | 2017-01-25 | 2018-07-06 | 엘지전자 주식회사 | 스팀발생장치 및 이를 포함하는 조리기기 |
KR101975196B1 (ko) * | 2017-05-17 | 2019-05-07 | 엘지전자 주식회사 | 조리 기기 |
CN107361640A (zh) * | 2017-08-31 | 2017-11-21 | 佛山市嘉亿艺术陶瓷研究有限公司 | 一种耐高温陶水壶及其制作方法 |
DE102018217645A1 (de) * | 2018-10-15 | 2020-04-16 | E.G.O. Elektro-Gerätebau GmbH | Verdampfereinrichtung und Elektrogerät mit einer Verdampfereinrichtung |
CN113425155B (zh) * | 2021-07-30 | 2022-04-22 | 赵牧青 | 一种可回收蒸汽的蒸锅及其控制方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996041099A1 (en) * | 1995-06-07 | 1996-12-19 | American Sterilizer Company | Integral flash steam generator |
WO1998036215A1 (fr) * | 1997-02-14 | 1998-08-20 | Ecovap S.A. | Generateur de vapeur |
WO1998045647A1 (en) * | 1997-04-04 | 1998-10-15 | Steris Corporation | Integral flash steam generator |
DE29814690U1 (de) * | 1998-08-17 | 1998-12-03 | Alfred Kärcher GmbH & Co, 71364 Winnenden | Reinigungsgerät mit einer Sprüheinrichtung |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE904653C (de) | 1943-04-25 | 1954-04-29 | Vorkauf Heinrich | Verfahren zur Regelung der Fluessigkeitseinspeisung in umlaufenden Dampferzeugern |
US3301481A (en) * | 1964-01-29 | 1967-01-31 | Varian Aerograph | Temperature control signal programmer |
DE6920783U (de) | 1968-05-23 | 1969-12-11 | Minolta Camera Kk | Belichtungsvorrichtung fuer elektrostatische photokopiergeraete. |
DE6901390U (de) | 1969-01-15 | 1969-11-06 | Agfa Gevaert Ag | Staubschutzkappe |
US3690302A (en) | 1971-03-25 | 1972-09-12 | Du Pont | Rotary boilers |
DE2757913A1 (de) | 1977-12-24 | 1979-06-28 | Messerschmitt Boelkow Blohm | Rotierender dampfgenerator |
EP0284675B1 (de) | 1987-03-30 | 1992-12-30 | Foster Wheeler Energy Limited | Tandemabscheider für ein Dampf-Wasser-Gemisch |
US4972804A (en) | 1989-04-25 | 1990-11-27 | Alexander T. Kindling | Method and apparatus for organizing the flow of fluid in a vertical steam generator |
IT1253692B (it) | 1991-07-17 | 1995-08-22 | Zanussi Grandi Impianti Spa | Dispositivo di generazione del vapore per apparecchiature di cottura degli alimenti, come forni di cottura o simili. |
US5592647A (en) * | 1991-08-26 | 1997-01-07 | Nippon Tungsten Co., Ltd. | PTC panel heater with small rush current characteristic and highly heat insulating region corresponding to heater location to prevent local overheating |
JP2004505700A (ja) | 2000-08-09 | 2004-02-26 | ラツィオナル アクチエンゲゼルシャフト | 特に調理機器のための蒸気を発生する方法と装置 |
US20090103907A1 (en) * | 2007-10-23 | 2009-04-23 | Nir Nave | Method and device for water dispensers on sabbath |
-
2005
- 2005-03-15 DE DE102005012219A patent/DE102005012219A1/de not_active Withdrawn
-
2006
- 2006-02-21 DE DE502006002065T patent/DE502006002065D1/de active Active
- 2006-02-21 CN CNA2006800126164A patent/CN101160492A/zh active Pending
- 2006-02-21 US US11/908,884 patent/US7856170B2/en not_active Expired - Fee Related
- 2006-02-21 EP EP06705996A patent/EP1859199B1/de not_active Expired - Fee Related
- 2006-02-21 WO PCT/DE2006/000313 patent/WO2006097062A2/de active Application Filing
- 2006-02-21 JP JP2008501147A patent/JP2008533421A/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996041099A1 (en) * | 1995-06-07 | 1996-12-19 | American Sterilizer Company | Integral flash steam generator |
WO1998036215A1 (fr) * | 1997-02-14 | 1998-08-20 | Ecovap S.A. | Generateur de vapeur |
WO1998045647A1 (en) * | 1997-04-04 | 1998-10-15 | Steris Corporation | Integral flash steam generator |
DE29814690U1 (de) * | 1998-08-17 | 1998-12-03 | Alfred Kärcher GmbH & Co, 71364 Winnenden | Reinigungsgerät mit einer Sprüheinrichtung |
Also Published As
Publication number | Publication date |
---|---|
CN101160492A (zh) | 2008-04-09 |
DE502006002065D1 (de) | 2008-12-24 |
JP2008533421A (ja) | 2008-08-21 |
DE102005012219A1 (de) | 2006-09-21 |
EP1859199A2 (de) | 2007-11-28 |
US20080193110A1 (en) | 2008-08-14 |
EP1859199B1 (de) | 2008-11-12 |
WO2006097062A3 (de) | 2007-02-08 |
US7856170B2 (en) | 2010-12-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1859199B1 (de) | Beheizbares gehäuse, vorrichtung zur erzeugung von dampf und gargerät | |
EP1307690B1 (de) | Verfahren und vorrichtung zum erzeugen von dampf, insbesondere für ein gargerät | |
DE3779634T2 (de) | Schnelldampferzeuger fuer haushalts- und fachgebrauch. | |
EP3892923B1 (de) | Gargerät mit einem garraum und verfahren zu dessen reinigung | |
DE102007048567B4 (de) | Verfahren zur Reinigung eines Systems, bestehend aus einem Tank und einem Durchlauferhitzer, sowie System | |
EP0383327A1 (de) | Dampferzeuger für Gargeräte mit Entkalkungseinrichtung | |
DE202007005738U1 (de) | Durchlaufwärmetauscher zur Zubereitung von Getränken, insbesondere Wasser-Durchlauferhitzer für Kaffeezubereitungsmaschinen | |
EP0228000B1 (de) | Elektrischer Durchlauferhitzer | |
EP2861914B1 (de) | Durchlauferhitzer | |
EP0903098B1 (de) | Filterkaffeemaschine | |
EP0258358B1 (de) | Dampferzeuger | |
DE4427460C2 (de) | Backofen zum Dampfgaren | |
DE3914683C2 (de) | Kleindampferzeuger für den Betrieb mit Leitungswasser | |
DE3825166A1 (de) | Elektrischer durchlauferhitzer fuer eine getraenkezubereitungsmaschine | |
DE102020108021A1 (de) | Verteilerscheibe für eine Reinigungsflüssigkeit, Verteilersystem, Gargerät mit einem Garraum und Verfahren zu dessen Reinigung | |
DE2832389A1 (de) | Oelofen, insbesondere zur verbrennung von altoel | |
DE69403127T2 (de) | Kaffeemaschine mit Wasserrückführungsschacht | |
DE4333585C2 (de) | Herd mit einem als Backrohr nutzbaren, elektrisch oder mittels Gas beheizbaren Backraum | |
EP0807428A2 (de) | Verdampfersystem für Sauna-Anlagen | |
DE69110261T2 (de) | Elektrischer Wasserkocher mit verbesserter Heizungsanlage. | |
EP0011290A1 (de) | Espressokaffeemaschine | |
EP0483404B1 (de) | Maschine zum Bereiten von Heissgetränken | |
DE202009006003U1 (de) | Luftkanalbefeuchter mit indirektem Wärmetransfer | |
CH684011A5 (de) | Vorrichtung zum Befeuchten des Bügelgutes an einer Bügelmaschine. | |
WO2024046648A1 (de) | Heizeinrichtung zum erhitzen von flüssigkeit und verfahren zum betrieb einer heizeinrichtung |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 2006705996 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2008501147 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: RU |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: RU |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200680012616.4 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11908884 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 2006705996 Country of ref document: EP |