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WO2024184372A1 - Dispositif de génération de vapeur pour four domestique - Google Patents

Dispositif de génération de vapeur pour four domestique Download PDF

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Publication number
WO2024184372A1
WO2024184372A1 PCT/EP2024/055776 EP2024055776W WO2024184372A1 WO 2024184372 A1 WO2024184372 A1 WO 2024184372A1 EP 2024055776 W EP2024055776 W EP 2024055776W WO 2024184372 A1 WO2024184372 A1 WO 2024184372A1
Authority
WO
WIPO (PCT)
Prior art keywords
steam
water
generator
generating
domestic oven
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2024/055776
Other languages
English (en)
Inventor
Constantin KRAUSSE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electrolux Appliances AB
Original Assignee
Electrolux Appliances AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Electrolux Appliances AB filed Critical Electrolux Appliances AB
Priority to AU2024234040A priority Critical patent/AU2024234040A1/en
Priority to CN202480015129.1A priority patent/CN120769965A/zh
Publication of WO2024184372A1 publication Critical patent/WO2024184372A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
    • F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
    • F24C15/327—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation with air moisturising
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/003—Details moisturising of air

Definitions

  • the invention relates to a steam-generating-device for a domestic oven, and to a domestic oven comprising such a steam- generating-device .
  • a steam cooker function is desired for many domestic ovens .
  • a steam-generating-device with a steamgenerator is integrated into the domestic oven or connected to it externally .
  • the steam-generating-device is supplied with water from a water-tank or from a standard household wall connection (with a standard line pressure ) .
  • known steam-generating-devices are very costly because a complex system is required to provide the necessary pressure gradient depending on the use case .
  • the main use case is to supply the steam-generating-device with water, it is necessary to clean the steam-generating-device due to limescale and other ( adhering) solids . Therefore , cleaning or decalci fication requires di f ferent pressure gradients in the steam-generating-device .
  • the present invention is based on the task of at least partially overcoming the disadvantages known from the prior art .
  • the features according to the invention result from the independent claims , for which advantageous embodiments are shown in the dependent claims .
  • the features of the claims can be combined in any technically sensible manner, whereby the explanations from the following description as well as features from the figures , which comprise supplementary embodiments of the invention, can also be used for this purpose .
  • the invention relates to a steam-generating-device for a domestic oven, comprising at least the following components :
  • a steam-generator arranged to be fed with water from the water-source and arranged to generate steam
  • - a water-outlet for discharging water from the precipitator and/or the steam generator, the steam-generator and the precipitator having a nominal- fill-level ( 7 ) for liquid water during operation .
  • the steam-generating-device is characterised in particular by the fact that a siphon with a fixed siphon-level is also provided upstream of the water-outlet , the siphon-level being arranged at least at or above the nominal- fill-level of the precipitator and the steam-generator when a domestic oven is installed in the earth-gravity- field .
  • the sides or lateral elements are arranged between front and rear and extending along the earth-gravity- field, often referred to as left or right , but thus not arranged below or above between front and rear . It should be noted that often a connection is not or not only provided at the rear, but also alternatively or additionally at the sides , bottom and/or top .
  • the precipitator is designed to retain condensed water from the steam ( -liquid-mixture ) generated by the steam-generator .
  • the precipitator has labyrinth-like walls in an installed domestic oven in the earth-gravity- field in relation to the ef fect of gravity on the vapour-like water, to which liquid water or water droplets can adhere and ( at least collectively) drip of f .
  • the precipitator comprises a collecting basin for liquid water, preferably in the earth-gravity- field below a steam-delivery-port to a cavity of a domestic oven, into which water in a state as purely as possible being vapourised is to be fed .
  • the collection basin is preferably arranged in such a way that the water cannot be fed exclusively to the wateroutlet , but can also ( or primarily) be fed directly ( i . e . without further treatment and/or external or additional energy supply) back to the steam-generator, preferably with a basin outlet near a feed inlet-port of the steam-generator .
  • an outlet-port is formed towards a water-outlet .
  • the water-outlet is arranged to discharge water, for example to maintain said nominal- fill-level .
  • the water-outlet is arranged in a flow direction within the steam-generator at the end .
  • all the above-mentioned components of the steam-generating-device are arranged in the earth-gravity- field above the water-outlet , so that water flows towards the water-outlet with a downward gradient during operation of the steam-generator .
  • a siphon is provided which is connected upstream of the water-outlet in the direction of flow within the steam-generating-device .
  • a siphon has at least one threshold that must be overcome by the outflowing water against the force of gravity during operation .
  • the siphon is a reverse-U-shaped conduct with the siphon-level being defined by the bottom of the U-shape , which is the highest point of that conduct . I f the siphon-level is not exceeded by the water in the steam-generator and precipitator, i . e . the current fill-level , the water cannot flow out via the water-outlet .
  • the siphon-level in an installed domestic oven in the earth-gravity-field
  • the nominal-fill-level can be maintained without further means, especially without an active control via, for example, an active outlet valve or an active pump.
  • an outflow of (cleaning) fluid is possible, also passively at least with regard to the water-outlet.
  • a cleaning liquid is passively expelled from the steam-generating-device without the need for rinsing as soon as the siphon-level has been overcome, whereby all or almost all of the liquid is then drawn out by itself overcoming the siphon-level (which is higher at least towards the end) as a result of the water column pressure in relation to the water-outlet, which is always lower, although the threshold is connected upstream of the water-outlet.
  • the nominal-fill-level is actively controlled, for example using a flow rate and/or evaporation rate in the direction of flow upstream of the siphon.
  • water overflow is accepted and the nominal-fill- level is reliably adjusted passively using the effect of the siphon-level.
  • the liquid sensor or temperature sensor of the steam-generator is used to detect a need for water i.e., to conclude that the fill-level has dropped below the nominal-fill-level.
  • the nominal-fill-level is a range that oscillates around a control value or above or below the control value, but by an amount acceptable for the use.
  • the water-outlet is connectable or connected to a descaling-receptacle.
  • the water-outlet is connected to a descaling-receptacle, for example a container that is integrated permanently or during normal operation of the steam-generator or a basin that is inserted or positioned when required. This makes it easy to collect the water (e.g. in the event of overfilling of the steam-generating-device or an internal fault) and/or a cleaning liquid.
  • the water-outlet is connected to a standard household wall connection, in this case correspondingly for waste water (preferably permanently installed) .
  • said water-source comprises an active inlet-valve, said active inlet-valve being located in an installed domestic oven in the earth-gravity-field above the nominal-fill-level of the precipitator and the steamgenerator .
  • the nominal-fill-level (or other desired fill-level) is easily and safely adjustable under the assumed or electronically verified condition that sufficient water is provided by the water-source.
  • the active inlet-valve is the sole admission control for water to the steam-generator.
  • the active inletvalve is transferable to at least two positions, namely a (fully) open position and a (fully) closed position.
  • the active inlet-valve is set up to meter the flow i.e., different flow cross-sections can be (actively) set in a discrete or continuously adjustable manner.
  • the inletvalve is preferably electronically controllable, for example with an electric actuator.
  • the water-source comprises a water-tank which, in an installed domestic oven, is arranged in the earth-gravity- field above the nominal- fill-level of the precipitator and the steam-generator, wherein the water passes from the water tank to the steam generator solely due to gravitational force acting on the water itsel f .
  • a water-tank is set up to provide water for the steam-generator .
  • the water-tank can be supplied with water directly from a standard household wall connection .
  • a household wall connection is connected in addition to the water-tank for providing water .
  • the water-tank is manually refillable by a user and provides a suf ficient volume of water for a predetermined period of use .
  • the volume of water is such that a complete cleaning process ( according to a physical necessity and/or a software-speci fied one ) can be carried out with suf ficient water and/or cleaning fluid without refilling in the meantime .
  • the ( target ) volume of the water-tank is j ust set up so that it is emptied after a complete cleaning process .
  • the water-tank is directly connected to the water-outlet via an overflow-connection .
  • the water-tank has an overflow-connection so that the water-tank cannot be overfilled and thus an overflow into other areas , for example with corrosion-prone and/or electronic or electrically conductive elements , is prevented .
  • the overflowconnection is directly connected to the water-outlet , so that in one embodiment the overflowing water drains into a permanently installed container or basin provided for this purpose or a ( sewage ) wall connection .
  • a basinlike depression is formed in the cavity of the domestic oven, for example , or an overflow is noticeable to a user because of the (non-corrosive ) steam-resistant material in the cavity, and the water that has overflowed there can be removed, for example , collected, without damage and with little ef fort .
  • the overflowed water can also remain there and be evaporated during the operation of the domestic oven when it is next heated ( for example , when preparing comestible goods ) .
  • the overflow-connection is directly connected to the wateroutlet in such a way that it is downstream of the siphon in the direction of flow ( of the water behind the inlet-valve ) i . e . , it does not have to overcome the siphon-level in order to flow out through the water-outlet .
  • This means that the setting, preferably regulation, of the nominal- fill-level is not af fected by overflowing water from the water-tank .
  • an outlet , overflow-connection and inlet-connection and similar designations defines pipes or hoses , preferably each a single pipe or hose , as the case may be , comprising ( for example using welds or sleeves ) sections connected in series .
  • Such subsections are also interrupted, for example , by a component such as the inlet-connection being interrupted ( or split into two parts ) by the inlet-valve .
  • an inlet-valve according to an embodiment of above description is arranged in an inletconnection for supplying water to the steam-generator and is arranged in an installed domestic oven in the earth-gravity- field below the water-tank .
  • the active inlet-valve is arranged in the earth-gravity- field below the water-tank and thus , when the water-tank is suf ficiently filled, a suf ficient water column pressure is applied to the active inlet-valve , which is preferably constant within a narrow range with the aid of an appropriate design of the water-tank .
  • a water column pressure that is considered suf ficient here enables the nominal- fill- level to be set ( or regulated) using only opening and closing the active inlet-valve . It is therefore not necessary to provide a pump or to compulsorily provide the water using a wall connection with an appropriate household water pressure as water-source .
  • the only necessary active ( i . e . , performing an active movement ) component of the steam-generating-device in this embodiment is the active inlet-valve .
  • a plurality of sensors are used, but these only require a fraction of the ( electrical ) energy that a pump requires .
  • the active inlet-valve also requires signi ficantly less energy and is less complicated and thus more cost-ef fective to implement than a shut-of f valve , as is necessary for a wall connection as a water-source , because the water column pressure of the water-tank is lower than a normal household water pressure for which such a shut-of f valve must be designed .
  • the precipitator comprises a steam-delivery-port to a cavity of a domestic oven, the steam- delivery-port being simultaneously connected via a bridgeconnection to an inlet-connection between the water-source and the precipitator and the steam-generator, and to the siphon .
  • a steam-delivery-port for the cavity is part of the precipitator .
  • the precipitator is a coherent box, for example with a pot and a lid or inj ection moulded in one piece .
  • the precipitator is formed from a conduit system .
  • the precipitator is arranged upstream of the steam-delivery-port in the flow direction of the steam generated by the steam-generator .
  • a bridge-connection is further provided .
  • This bridge-connection is provided for discharging condensed water, whereby the condensed water is recirculated using the bridge-connection .
  • the bridge-connection is in fact connected between the watersource and the precipitator and the steam-generator, as well as the siphon, and is thus arranged upstream of the precipitator and the steam-generator, as well as the siphon, in the direction of flow of the condensed water .
  • the condensed water is recirculated without further control and/or without measurement .
  • the bridge-connection of the steam-delivery-port in an installed domestic oven being in the earth-gravity- field below an inlet-valve is connected to an inletconnection between the water-source and the precipitator and the steam-generator, as well as the siphon .
  • the bridge-connection is connected in the earth-gravity- field below the active inlet-valve as described above .
  • the condensed water is kept in the section that is fed with water from the water-source in a controlled manner using the active inlet-valve .
  • the desired nominal- fill-level is maintained using the siphon-level , preferably as described above without any further control means besides the active inlet-valve .
  • the bridge-connection of the steam-delivery-port has a point which, in an installed domestic oven, is higher in the earth-gravity- field than the steam-delivery-port .
  • the bridge-connection is also designed in a siphon-like manner, whereby firstly, as a result of the rise of the bridge-connection starting from the steam- delivery-port , an inflow of steam into the bridge-connection is limited and secondly, a proportion already present as liquid water ( condensed water ) flows directly back into the precipitator . Water that gets behind the highest point of the bridge-connection, for example from the steam form only condenses there , is then returned to the system as described above .
  • the bridge-connection formed in this way is protected from impairment by deposits , such as limescale , over a targeted service li fe of the steam-generating-device and does not necessarily have to be cleaned during a cleaning process .
  • a domestic oven comprising at least the following components :
  • the steam-generating-device being connected to the cavity for releasing steam using a steam-delivery-port .
  • the domestic oven is , for example , a steam cooker, a baking oven and/or a microwave oven, whereby preferably a steam cooking function is integrated into both of the latter using the steam-generating-device in accordance with an embodiment described above .
  • a front-opening closable by a door is provided at the front and/or at the top, via which the cavity of the domestic oven is accessible to a user, wherein a climate can be set within the cavity i . e . , usually an increased temperature and/or increased humidity compared to the ( kitchen) environment .
  • the cavity and/or the door is preferably thermally insulated from the environment .
  • the domestic oven proposed here is designed with an integrated or without i . e . , separate , door .
  • a heating-device is provided for heating the space in the cavity .
  • the steam-generating-device is provided .
  • the domestic oven comprises a water-source , whereby this is formed in one embodiment as a water-tank or alternatively by a connection (for example together with a pipe ) for a wall connection customary in households .
  • a domestic oven includes an oven body, a ( cooking) cavity inside the oven body, a control panel with a water (pull-out ) drawer for loading water, a steamgenerating device located in a compartment external to the cavity .
  • the domestic oven comprises a water-tank, an ( inlet ) valve being fluidically connected to the water-tank at the valve inlet , and connected to a steam-generator ( circuit ) at the valve outlet , a steam-generator being fluidically connected to the valve , wherein the steamgenerator delivers steam to the cavity, a siphon connected on one end to the lowest part in the steam-generator circuit and behind the valve ( can be the steam-generator ) , and on the other end to an outlet that in one embodiment leads into the cavity or to the front face of the oven .
  • the end of the siphon being connected to the cavity is located at an elevation below the lowest part of the steam-generator circuit in the direction of gravity, and the working water level of the steam-generator being lower ( in a gravity direction) than the highest portion of the siphon .
  • the above layout of components allows the steam-generating- device to work normally when the water level is kept at the nominal level ( or lower ) , but also enables a method of draining the steam circuit .
  • This water draining method implies that the water valve opens for the necessary amount of time to let a water portion to fill up the steam generating circuit , at least up to the highest portion of the siphon , so then the siphon is activated and all the water contained in the steam system will move to the bridge-connection outlet thanks to the principle of the siphon .
  • the steam-generating-device When the user selects a steam cooking function, or a cooking function that requires steam, the steam-generating-device will be activated . When the steam generation is active , the steamgenerator is powered and therefore it is evaporating water . Steam then is inj ected inside the cooking cavity in order to enhance cooking performance .
  • the steam-generator will need a stable water level .
  • Such (nominal ) level is conveniently located below the highest portion of the siphon, in order to prevent accidental spillage of f water into the siphon .
  • the water level obviously decreases .
  • the water valve will open or a pump will provide water (pressure ) to allow the necessary amount of water to replenish the system, and reach back the nominal water level .
  • This water feeding system can be controlled according to a closed loop, by using the signal from a water level sensor located in the steam generation circuit , approximately at the height of the nominal- fill-level .
  • a possible control logic for such system can be the following :
  • the sensor When the water level goes below the target-height due to evaporation, the sensor will detect it .
  • the oven controls are receiving this signal , commanding the opening of the valve .
  • the valve will stay open until the level sensor detects that the water level is back at the target-height . Once targetheight is reached, the valve will close .
  • the user puts a tray below the water-outlet exit in the cavity ( or a pitcher below a water exit in the front frame ) ;
  • This operation can be repeated in order to get a more ef fective rinse .
  • the user puts a tray below the water-outlet in the cavity (or a pitcher below a water exit in the front frame ) ;
  • the user fills the water-tank with fresh water mixed with a descaling agent up to the maximum level . Then, the user presses " start descaling" in a user interface of the domestic oven;
  • the inlet-valve will let a first or the entire amount of the ( descaling) liquid to pass through until the water level sensor detects that the circuit is full ;
  • the liquid is left in the circuit in order dissolve limescale .
  • the fluid can also be heated up to boost the descaling;
  • valve is opened to let the remaining fluid or a fluid (without descaling agent ) freshly filled into the water-tank by the user or from a di f ferent tank to flow into the system . This will trigger the siphon ef fect ;
  • step 5 the remaining fluid contains descaling agent , a system drain or rinse with fresh water is performed as describe above , wherein preferably the user does not have to start the program by pressing " start drain” and/or only acknowledge that the water-tank is refilled with ( clean) water .
  • a water-tank according to an embodiment of above description is arranged in the installed domestic oven in the earth-gravity- field above the cavity .
  • a usually available installation space can be utilised at the same time , which is spanned vertically above the cavity by electronic components and/or the installation space of a hotplate arranged above it .
  • the water-tank is thus arranged at a height that is easily accessible for a user in the usual arrangement of a domestic oven in a kitchen . It is further proposed in an advantageous embodiment of the domestic oven that the water-tank can be filled from the front with respect to the front-opening of the cavity, preferably using a pull-out drawer .
  • a water-tank that can be filled from the front is particularly easy for a user to access .
  • a pull-out drawer enables the ergonomic pouring of water or the use of any vessels for pouring water into the water-tank .
  • An embodiment with all the components mentioned being arranged behind the cavity is particularly space-saving in a normally available installation space , in which the installation depth of the cavity and other components of the domestic oven is not fully utilised .
  • all or some of said components are arranged laterally, below or above the cavity .
  • said components or the entire steam-generating-device are housed in a separate installation space from the installation space provided for the domestic oven .
  • the heating-device comprises at least one of the following heat sources :
  • a fan is also provided to distribute the generated heat .
  • two separate means are provided, for example a gas burner and an electric heating coil , or for example at least one electric heating coil and a magnetron (for generating so-called microwaves ) .
  • a means for generating top heat and a separate means for generating bottom heat are comprised by the heatingdevice .
  • a wet-bulb-sensor-device is arranged in the cavity, wherein releasing steam via the steam-delivery-port into the cavity is controlled using the wet-bulb-sensor-device .
  • the wet-bulb-sensor-device is set up to detect the wet bulb temperature , whereby a basin or its opening ( oriented upwards during operation) and the temperature sensor are arranged in the cavity for this purpose .
  • a temperature detected using the wet-bulb-sensor-device can be used as an input value , preferably in addition to a dry temperature detection, for the temperature control device or integrated into a corresponding control loop .
  • the temperature and/or the relative humidity as a setpoint is speci fied by a user directly or indirectly ( for example via a programme ) .
  • steam is generated by the steam-generator on the basis of the measured values of the wet-bulb-sensor-device .
  • the wet-bulb-sensor-device itsel f is to be supplied with water, whereby this is preferably made available using the said water-source , particularly preferably from the water-tank of the wet-bulb-sensor-device arranged above the cavity ( in use in the earth-gravity- field) .
  • Fig . 1 a perspective rear view of a domestic oven
  • Fig . 2 a schematic view of a steam-generating-device with the inlet-valve closed
  • Fig . 3 the schematic view of the steam-generating-device according to Fig . 2 with the inlet-valve open;
  • Fig . 4 the schematic view of the steam-generating-device according to Fig . 2 and Fig . 3 without water supply from the water-source ;
  • Fig . 5 a perspective front view of a domestic oven .
  • Fig . 1 shows a domestic oven 2 in a perspective rear view .
  • the front-opening 20 is covered here .
  • all other components of the steam-generating- device 1 are arranged at the rear side of the domestic oven 2 .
  • An overflow-connection 14 can be seen on the far left of the illustration, using which a maximum filling level of the water-tank 13 is defined .
  • the overflow-connection 14 is connected to a water-outlet 6 , which opens into the cavity 17 , for example as shown in Fig . 5 .
  • An inlet-connection 15 can be seen on the water-tank 13 below the connection of the overflow-connection 14 , which in the further course runs to the right of the overflow-connection 14 as shown .
  • an active inlet-valve 12 can be seen, which is arranged in the earth-gravity-field 10 below the water-tank 13.
  • the inlet-connection 15 (behind the inletvalve 12) opens into a distributor 24, which in the illustration is inclined to the left, i.e. towards the wateroutlet 6, at a small angle (for example 5° [five degrees of 360°] ) to 10° to a ground plane (to which the earthgravity-field 10 is normally aligned) .
  • a steamgenerator 4 is connected to the right of the course of the distributor 24 i.e., against a flow direction with no water column in the inlet-connection 15. the steam-generator 4 has a bend upwards and opens into a precipitator 5.
  • the precipitator 5 is here in the form of a continuous box with a labyrinth-like wall, so that the steam must flow from a highest point in the precipitator 5 to a lower point in order to reach the steam-delivery-port 16, which is here arranged in a conduit which is formed separately from the continuous box of the precipitator 5 and merges (in the direction away from the precipitator 5) behind the steam-delivery-port 16 into a bridge-connection 18.
  • the steam-delivery-port 16 is connected from the rear-outside to the cavity 17 for discharging the generated steam into the cavity 17.
  • the said outlet 18 here has a (highest) point 19, which is higher in the earthgravity-field 10 than the steam-delivery-port 16. Behind this highest point 19, the outlet 18 opens into the inletconnection 15, in this case below the inlet-valve 12.
  • the precipitator 5 is also connected to the distributor 24 immediately before the steam-generator 4 enters. In the direction of flow downstream of the inlet-connection 15, the distributor 24 opens into a siphon 8, which is concealed here (compare Fig. 2 to Fig. 4) .
  • Fig. 2 shows a schematic view of a steam-generator 1 with the inlet-valve 12 closed.
  • a water-source 3 for example a water- tank 13 (here purely optionally with a pull-out drawer 22) , is shown at the top left.
  • an active inlet-valve 12 is sketched, which is arranged below in the earth-gravity-field 10 and which, as said, is shown in the closed state and thus the water from the water-source 3 is prevented from flowing into the distributor 24.
  • the inlet-connection 15 opens into the distributor 24, which runs to the right as shown (i.e., uphill) to the steam-generator 4 and the precipitator 5.
  • the water-outlet 6, which in this embodiment opens into the cavity 17, is connected to the siphon 8. It should also be noted that a steam-delivery- port 16 is provided in the earth-gravity-field 10 above the precipitator 5 towards the cavity 17.
  • a reference-level 25 is defined at the lowest point of the distributor 24, from which the targetheight 26 i.e., the vertical distance, to the nominal-fill- level 7 is defined.
  • the siphon-height 27 i.e., the vertical distance, to the siphon-level 9 is also defined from the reference-level 25.
  • the siphon-height 27 is greater than the target-height 26.
  • the valve-height 28 i.e., the vertical distance, between the reference-level 25 and the active inlet-valve 12 is defined, as well as the minimum tankheight i.e., the vertical distance, between the referencelevel 25 and the deepest point of the water-source 3 is defined.
  • the outletdepth 29 i.e., the vertical distance between the referencelevel 25 and the water-outlet 6, on the other hand, is arranged in the earth-gravity-field 10 below the referencelevel 25.
  • a nominal-fill-level 7 is set below the siphon-level 9 of the siphon 8, set up using appropriate control of the active inlet-valve 12 and otherwise using gravity alone.
  • the water remains in the system section with the steam-generator 4 and the precipitator 5, as well as the steam-delivery-port 16.
  • a time sequence 18 of a cleaning process is shown, whereby at least the water in the distributor 24, the precipitator 5 and the steam-generator 4 is then here a cleaning solution.
  • the cleaning solution is kept in the state shown for a predetermined time to dissolve deposits, for example, among other things, limescale, and is heated if necessary (preferably using the steam-generator 4) .
  • Fig. 3 shows the schematic view of the steam-generating- device 1 according to Fig. 2 with the inlet-valve 12 open.
  • the water flows here through the active (open) inlet-valve 12 into the distributor 24 and raises the fill-level above the nominal-fill-level 7 and also above the siphon-level 9.
  • the water thus flows out of the water-outlet 6. This is desirable, for example, for cleaning or rinsing. It should be noted that, apart from the active inlet-valve 12, no other active component, especially no pump, is necessary for this either.
  • Fig. 4 shows a schematic view of the steam-generating-device 1 according to Fig. 2 and Fig. 3 without water supply from the water-source 3.
  • the water-source 3 is empty.
  • the active inletvalve 12 is closed again.
  • the current fill-level 30 in the steam-generator 4 and the precipitator 5 is now again below the siphon-level 9 and even below the nominal-fill-level 7. But there is still a height-difference 31 between the current fill-level 30 and the water-outlet 6, so that there is a water column with sufficient pressure to overcome the threshold of the siphon-level 9 until all or almost all of the water has flowed out of the distributor 24. No active component is required for this either, not even the active inlet-valve 12.
  • Fig. 5 shows a perspective front view of a domestic oven 2.
  • the cavity 17 is visible through the front-opening 20, in which a suspended grid 32 can be seen.
  • a fan can be seen, which is simplified here as part of a heating-device 21, whereby (independently of the fan) a gas burner and/or an electric heating coil is usually arranged in the bottom wall (below) and/or in the top wall (above) of the cavity 17.
  • the water-outlet 6 can also be seen here, which opens laterally into the cavity 17, whereby a basin is inserted here (for example for a cleaning process) as a descalingreceptacle 11 in the cavity 17.
  • a (purely optional) wet-bulb-sensor-device 23 is shown here, by means of which the supply of steam (the steam-delivery-port 16 is concealed here) and thus the steam-generator 4 is preferably controlled.
  • the steam-generating-device proposed here enables particularly simple and cost-effective operation.
  • List of reference numerals st earn- genera ting-device domestic oven water-source st earn- genera tor precipitator water-outlet nominal- fill-level siphon siphon-level earth-gravity- field de sea ling- re cep taele active inlet-valve water-tank over flow- connect ion inlet- connect ion steam-delivery-port cavity bridge- connect ion highest spot front -opening he a ting- de vice pull-out drawer wet -bulb- sens or- device distributor ref erence- level tar get -height siphon-height valve-height outlet-depth current fill-level height-di f ference furnace -grate

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cookers (AREA)
  • Devices For Medical Bathing And Washing (AREA)

Abstract

L'invention concerne un dispositif de génération de vapeur (1) pour un four domestique (2), comprenant au moins les composants suivants : - une source d'eau (3) ; - un générateur de vapeur (4) conçu pour être alimenté en eau à partir de la source d'eau (3) et conçu pour générer de la vapeur ; - un précipitateur (5) pour l'eau condensée à partir de la vapeur du générateur de vapeur (4) ; - une sortie d'eau (6) pour évacuer l'eau provenant du précipitateur (5) et/ou du générateur de vapeur (4), le générateur de vapeur (4) et le précipitateur (5) ayant un niveau de remplissage nominal (7) pour l'eau liquide pendant le fonctionnement. Le dispositif de génération de vapeur (1) est caractérisé en particulier par le fait qu'un siphon (8) avec un niveau de siphon fixe (9) est également disposé en amont de la sortie d'eau (6), le niveau de siphon (9) étant disposé au moins au niveau ou au-dessus du niveau de remplissage nominal (7) du précipitateur (5) et du générateur de vapeur (4) lorsqu'un four domestique (2) est installé dans le champ de gravité terrestre (10). Le dispositif de génération de vapeur proposé ici assure un fonctionnement particulièrement simple et économique.
PCT/EP2024/055776 2023-03-09 2024-03-06 Dispositif de génération de vapeur pour four domestique Pending WO2024184372A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2024234040A AU2024234040A1 (en) 2023-03-09 2024-03-06 Steam-generating device for a domestic oven
CN202480015129.1A CN120769965A (zh) 2023-03-09 2024-03-06 用于家用烤箱的蒸汽发生装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP23161059.3A EP4428446A1 (fr) 2023-03-09 2023-03-09 Dispositif de production de vapeur pour un four domestique
EP23161059.3 2023-03-09

Publications (1)

Publication Number Publication Date
WO2024184372A1 true WO2024184372A1 (fr) 2024-09-12

Family

ID=85569760

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/055776 Pending WO2024184372A1 (fr) 2023-03-09 2024-03-06 Dispositif de génération de vapeur pour four domestique

Country Status (4)

Country Link
EP (1) EP4428446A1 (fr)
CN (1) CN120769965A (fr)
AU (1) AU2024234040A1 (fr)
WO (1) WO2024184372A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2827057A1 (fr) * 2012-03-15 2015-01-21 Panasonic Corporation Générateur de vapeur et cuiseur à chauffage comportant un générateur de vapeur
EP3112765A1 (fr) * 2015-06-29 2017-01-04 Whirlpool Corporation Système de génération de vapeur destiné à être utilisé dans un appareil de cuisson
US20210088388A1 (en) * 2019-09-23 2021-03-25 Anova Applied Electronics, Inc. Wet bulb temperature sensor system and method for direct measurement of wet bulb temperature in an oven
CN215820572U (zh) * 2021-04-22 2022-02-15 华帝股份有限公司 一种自清洁的蒸汽发生系统及蒸汽烹饪设备
CN216147793U (zh) * 2021-05-06 2022-04-01 广东纯米电器科技有限公司 蒸汽发生装置及蒸汽烤箱
EP4050267A1 (fr) * 2021-02-25 2022-08-31 Electrolux Appliances Aktiebolag Four de cuisson
CN115507348A (zh) * 2022-09-30 2022-12-23 广东新宝电器股份有限公司 蒸汽发生器及其除垢方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2827057A1 (fr) * 2012-03-15 2015-01-21 Panasonic Corporation Générateur de vapeur et cuiseur à chauffage comportant un générateur de vapeur
EP3112765A1 (fr) * 2015-06-29 2017-01-04 Whirlpool Corporation Système de génération de vapeur destiné à être utilisé dans un appareil de cuisson
US20210088388A1 (en) * 2019-09-23 2021-03-25 Anova Applied Electronics, Inc. Wet bulb temperature sensor system and method for direct measurement of wet bulb temperature in an oven
EP4050267A1 (fr) * 2021-02-25 2022-08-31 Electrolux Appliances Aktiebolag Four de cuisson
CN215820572U (zh) * 2021-04-22 2022-02-15 华帝股份有限公司 一种自清洁的蒸汽发生系统及蒸汽烹饪设备
CN216147793U (zh) * 2021-05-06 2022-04-01 广东纯米电器科技有限公司 蒸汽发生装置及蒸汽烤箱
CN115507348A (zh) * 2022-09-30 2022-12-23 广东新宝电器股份有限公司 蒸汽发生器及其除垢方法

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AU2024234040A1 (en) 2025-07-31
EP4428446A1 (fr) 2024-09-11
CN120769965A (zh) 2025-10-10

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