EP1687570A1 - Gargerät mit wasserzufuhr - Google Patents
Gargerät mit wasserzufuhrInfo
- Publication number
- EP1687570A1 EP1687570A1 EP04819214A EP04819214A EP1687570A1 EP 1687570 A1 EP1687570 A1 EP 1687570A1 EP 04819214 A EP04819214 A EP 04819214A EP 04819214 A EP04819214 A EP 04819214A EP 1687570 A1 EP1687570 A1 EP 1687570A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- water supply
- cooking appliance
- cooking
- appliance according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 199
- 238000010411 cooking Methods 0.000 title claims abstract description 73
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 238000003860 storage Methods 0.000 claims abstract description 9
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 230000000737 periodic effect Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 230000002123 temporal effect Effects 0.000 claims 1
- 238000012432 intermediate storage Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
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
Definitions
- the invention relates to a cooking device with a cooking space, with one or more heating elements and with a water supply that has at least one water outlet and is fed by an external water supply.
- Cooking appliances are also increasingly being equipped with a steam generator system in order to improve the cooking results with the help of the moist cooking chamber air that then arises.
- Such cooking devices are, for example, combi steamers, ovens, steaming devices or hot air steamers. They are used in particular to prepare food for consumption.
- the steam is preferably generated by injecting water directly into the cooking space. For this purpose, water is fed into the cooking space and distributed there in various forms and thereby evaporated and through the hot environment.
- water supply lines are used according to concepts, for example from DE 101 58 425 C1, DE 39 09 283 C2 or EP 0 233 535 B1, which bring the water close to the hub of the fan wheel of a circulating fan. Since the fan wheel rotates around its hub, the centrifugal force directs the water from, for example, the hub to the fan wheel blades, where it is atomized and broken down into the smallest possible droplets, which then evaporate in the hot cooking chamber atmosphere. The rotation of the fan wheel leads to atomization.
- DE 39 09 283 C2 describes a combi steamer in which the water supply is equipped with a solenoid valve. In addition, a temperature measurement is provided in the exhaust stack. The solenoid valve for water supply is actuated as a function of a measured temperature in the exhaust air stack.
- the solenoid valve for water supply is actuated as a function of a measured temperature in the exhaust air stack.
- a proposal is also known from DE 202 00 618 U1 which enables a reduction in the amount of water, which avoids the dangers of a complete shutdown of the water flow.
- the water supply is equipped with a controllable water metering for metering the water flow rate. This means that the volume flow of water is no longer kept at approximately the same level, but is reduced after saturation is reached. This reduction enables considerable energy savings during the cooking process.
- adjustable solenoid valves are used in other cases to switch the water flow to the cooking chamber on or off. These valves are generally regulated by an electronic control.
- the volume flow is comparatively low and in practice, depending on the size of the furnace, between 3 and 25 liters per hour, corresponding to about 1 cm 3 / s to 7 cm 3 / s.
- the line pressure can be between 0.2 and 1.0 MPa, i.e. around 2 and 10 bar.
- controller and the valves used must first be adjusted.
- volume flow once set can only be changed to a limited extent by the control electronics.
- the volume flow can be reduced by clocking the solenoid valve, but it cannot be increased without further ado.
- the object of the invention is to propose a generic cooking device in which a better dosage is possible.
- This object is achieved in a generic cooking appliance in that " one or more intermediate water stores with a predetermined interior volume that can be filled with water are provided in the water supply, that the intermediate water store or stores is fed by the external water supply, that the interior volume of the intermediate water store or stores is temporarily against filling and temporarily against emptying, and that the water can be emptied from the interior volume of the one or more water storage tanks via the or t the water outlets for steam generation into the cooking space.
- the water intermediate store is designed as a stroke cylinder, the interior volume of which can be emptied by a piston.
- the intermediate water store can be temporarily blocked against overfilling and temporarily against emptying by means of a multi-way valve.
- the very pressure-dependent and incalculable water supply from the external water supply is separated from the actual water supply to the cooking space by a water buffer.
- the water buffer store is completely filled with water from the external water supply and then separated from this external water supply.
- the now exactly fixed and precisely defined interior volume of the water buffer, which is filled with water, is then emptied into the cooking chamber for steam generation. It is therefore precisely predictable and predictable which volume of water is supplied for steam generation. " .
- the interior volume is now dimensioned so small that a corresponding timing to a discrete, but almost continuous volume flow leads.
- This volume flow can now also be controlled by increasing or decreasing the timing in order to supply more or less water volume.
- This smoothing process can be increased even further by using appropriately laid hoses in the water supply. If necessary, it would even be conceivable to connect several intermediate water storage tanks in parallel and operate them alternately in order to achieve even greater smoothing.
- the water supply has at least two water supply lines running at least in sections, and each of the water supply lines has one or more intermediate water storage tanks with a predetermined interior volume that can be filled with water. It is particularly preferred if a water intermediate store of each of the two water supply lines is combined with one another in such a way that they form a common water intermediate store, the interior of which holds the two interior volumes which are separated by the piston which projects the water so that the movement of the piston simultaneously leads to an emptying of the interior volume of the one water buffer and to the filling of the assigned other interior volume of the other water buffer.
- an alternating filling via two branches of the water supply can be set up in a particularly reliable and structurally simple manner, in which, in addition, a piston movement can also be used in a particularly energetic manner at the same time for emptying the one intermediate store and for filling the other intermediate store.
- a piston movement can also be used in a particularly energetic manner at the same time for emptying the one intermediate store and for filling the other intermediate store.
- 3/2-way valves several commercially available 2/2-way valves can also be used, both with a solution with only one water buffer and with one with several.
- Figure 1 is a schematic overview of a cooking device with a water supply
- Figure 2 is a schematic representation of a water metering in a cooking device according to the invention.
- Figure 3 is a schematic representation of an alternative embodiment for water metering in a cooking device according to the invention.
- Figure 4 is a schematic representation of a third alternative embodiment of a water metering in a cooking device according to the invention.
- a cooking appliance for example a combi steamer, an oven or other hot air appliance, is shown schematically in section from the user's perspective in FIG. 1.
- This cooking appliance 10 has a cooking chamber 11.
- a heating element 12 is provided on the left-hand side, of which only two turns can be seen schematically on average.
- the cooking chamber 11 can either be heated by electrical heating elements 12 or else by heating elements 12 in the form of heat exchanger tubes in which a hot medium flows. Other devices for generating heat can also be used as heating element 12.
- a blower 20 is provided.
- This fan 20 has a fan motor 21, which drives a radial impeller 22 in the cooking space 11.
- the radial impeller 22 is located within the heating element 12 and is radially surrounded by it.
- the heating elements 12 - whether electrical or in the form of heat exchanger tubes - are usually in immediate flow field of the radial impeller 22 attached. Other arrangements are possible, but this has proven itself.
- a water supply 30 Another essential element of the combi-steamer according to the invention with a steam generator system is a water supply 30.
- the outlet at the water outlet 33 of the water supply 30 is depressurized or free.
- the water now reaches an atomizing element (not shown).
- FIG 2 left you can see the access from an external water supply source 40, so for example, existing in the building water supply line to the cooking appliance.
- the water from this external water supply 40 arrives at a water intermediate store 45, which is formed here by a cylinder.
- a water intermediate store 45 In the cylinder of the water intermediate store 45 there is an interior volume 46 which can be filled by the water from the external water supply 40.
- a valve 47 is located between the supply from the external water supply 40 and the intermediate water store 45. This valve 47 can be closed at its inlet 47 ′ in order to prevent further supply of water from the external water supply 40 into the intermediate water store 45 To prevent emptying of the interior volume 46 in the direction of the external water supply 40.
- the valve 47 is designed here as a 3/2-way valve.
- the second output 47 '' of the valve 47 leads to the above-mentioned water supply 32, here a hose line, which leads to the cooking chamber 11 from which "only the cooking chamber can be seen in FIG. 2
- the water supply line 32 also ends here with a water outlet 33, from which water enters the cooking chamber 11, usually in the vicinity of the radial impeller 22, see the description of FIG. 1.
- a piston 48 which can reduce or enlarge the interior volume 46 through its movement or can expel the amount of water contained in the interior volume 46 through the valve 47.
- the valve 47 is preferably a 3/2-way solenoid valve 47, at the first outlet 47 ′′ of which a working cylinder is attached as a water intermediate store 45 with the defined interior volume 46. If the valve 47 is now energized, water flows from the public water supply network as an external water supply 40 via the connecting line, the valve inlet 47 ′ and the first valve outlet 47 ′′ into the intermediate water store 45. The piston 48 in the working cylinder is extended due to the water pressure present. If the power supply is now interrupted, the valve 47 closes the water inlet 47 'and the water can be pushed out of the cylinder, for example with the aid of spring force 49 on the piston 48, into the second, now open, outlet 47'"of the solenoid valve 47. The water is transported from this outlet 47 '"to the cooking chamber 11 by means of the hose line 32. advantage. From there it can then be led to the fan wheel 22, where the steam is generated.
- the invention enables periodic water production. If the timing is chosen to be sufficiently short, the water flow is practically continuous. A continuous water flow can be achieved by suitable hose laying in the water supply line 32 to the cooking chamber 11. This means less disturbance for the temperature controller. If the hose of the water supply line 32 with a given inside diameter is laid horizontally for such a distance that is at least so long that the hose volume is greater than the interior volume 46 of the working cylinder of the intermediate water reservoir 45, the existing hose volume becomes due to the periodic operation of the piston 48 almost filled up. In the end, however, due to the free outlet at the water outlet 33 and the relatively low volume flow, the water level is always the same, namely lower than the hose cross section, so that there is a continuous water flow.
- the hose filling always oscillates between positions 41 and 42. If a suitable component is attached to the working cylinder of the water intermediate store 45, for example a Hall sensor 34 and a magnet in the piston 48, and outputs the measured data to the regulating or control device 50 via a schematically indicated line 51, then the electronic rule can - or control device check the operation of the water quantity metering 31 and report a malfunction to the operator if necessary (lack of water).
- a suitable component is attached to the working cylinder of the water intermediate store 45, for example a Hall sensor 34 and a magnet in the piston 48, and outputs the measured data to the regulating or control device 50 via a schematically indicated line 51, then the electronic rule can - or control device check the operation of the water quantity metering 31 and report a malfunction to the operator if necessary (lack of water).
- the water supply takes place via two water supply lines 30a and 30b running in parallel in terms of flow technology. These can both be fed from the same reservoir.
- the two interior volumes 46a and 46b are separated from one another by one and the same piston 48. A movement of the piston 48 now results in one of the two interior volumes 46a or 46b being emptied and the other being filled in contrast.
- FIG. 4 shows an alternative which is suitable both for the variant from FIG. 2 and for that from FIG. 3, but it is shown in connection with the version from FIG. 3.
- Blower Fan motor of the blower Radial fan wheel Water supply a Water supply line b Water supply line Water quantity metering Water supply line to the cooking chamber Water outlet in the cooking chamber Sensor on the water buffer external water supply Position for the hose filling Position for the hose filling Water intermediate storage a Water intermediate storage b Water intermediate storage of the valve interior volume 'Interior volume' interior volume 'Interior volume' interior volume 'Interior volume' outlet volume ' second outlet of the valve a valve b valve c valve valve piston spring force control or regulating device Cable from sensor to control and regulating device
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cookers (AREA)
- Commercial Cooking Devices (AREA)
- Pyridine Compounds (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10355778 | 2003-11-26 | ||
PCT/EP2004/013329 WO2005052452A1 (de) | 2003-11-26 | 2004-11-24 | Gargerät mit wasserzufuhr |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1687570A1 true EP1687570A1 (de) | 2006-08-09 |
EP1687570B1 EP1687570B1 (de) | 2009-07-22 |
Family
ID=34625370
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04819214A Active EP1687570B1 (de) | 2003-11-26 | 2004-11-24 | Gargerät mit wasserzufuhr |
Country Status (5)
Country | Link |
---|---|
US (1) | US7728261B2 (de) |
EP (1) | EP1687570B1 (de) |
AT (1) | ATE437340T1 (de) |
DE (1) | DE502004009796D1 (de) |
WO (1) | WO2005052452A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020074306A1 (de) | 2018-10-08 | 2020-04-16 | Miwe Michael Wenz Gmbh | Verfahren zur dampferzeugung |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMO20060333A1 (it) * | 2006-10-17 | 2008-04-18 | Gilberto Cattaneo | Applicazione di dispositivi di convogliamento d'aria, all'interno di forni statici a convenzione con ventilazione orizzontale sia ad uso professionale che domestici, atti a convogliare l'aria nel mezzo del forno. |
CN103329951A (zh) | 2008-01-28 | 2013-10-02 | 杜克制造公司 | 对流式炉 |
CN102226540B (zh) * | 2011-05-30 | 2012-11-07 | 汪传海 | 零能耗中餐厨房设备 |
WO2013190367A2 (en) * | 2012-06-21 | 2013-12-27 | Convotherm Elektrogeräte GmbH | Heat exchange means for cooking devices and methods for retrofitting cooking devices |
EP2860458B1 (de) | 2013-10-14 | 2022-02-23 | MKN Maschinenfabrik Kurt Neubauer GmbH & Co. KG | Verfahren zum Betreiben eines Gargeräts in Form eines Kombidämpfers und Gargerät zur Durchführung des Verfahrens |
DE102016215650A1 (de) * | 2016-08-19 | 2018-02-22 | BSH Hausgeräte GmbH | Haushaltsgargerät |
CN107960836A (zh) * | 2016-10-20 | 2018-04-27 | 佛山市顺德区美的电热电器制造有限公司 | 烹饪器具 |
CN107960837B (zh) * | 2016-10-20 | 2024-02-27 | 佛山市顺德区美的电热电器制造有限公司 | 烹饪器具 |
CN114246461B (zh) * | 2020-09-21 | 2023-06-27 | 佛山市顺德区美的电热电器制造有限公司 | 烹饪装置的控制方法、烹饪装置、电子设备及存储介质 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8604451U1 (de) | 1986-02-19 | 1986-04-30 | Eloma GmbH Bedarfsartikel zur Gemeinschaftsverpflegung, 8031 Gernlinden | Gerät zum Garen von Nahrungsmitteln |
DE3909283C2 (de) | 1989-03-21 | 1994-09-29 | Eloma Gmbh | Dampfgargerät |
DE19732240C1 (de) * | 1996-07-04 | 1999-04-08 | Britax Sell Gmbh & Co Ohg | Konvektionsofen, insbesondere zum Einsatz in Flugzeugbordküchen |
DE19918330A1 (de) * | 1999-04-22 | 2000-10-26 | Bsh Bosch Siemens Hausgeraete | Frischwasser-Dosiereinrichtung für Dampfbacköfen |
DE10158425C1 (de) | 2001-11-29 | 2003-09-11 | Neubauer Kurt Maschf | Gargerät mit Gebläse und Wasserzufuhr |
DE20200618U1 (de) | 2002-01-15 | 2002-07-04 | Neubauer Kurt Maschf | Gargerät mit Wasserzufuhr |
JP3708107B2 (ja) * | 2004-03-18 | 2005-10-19 | シャープ株式会社 | 蒸気発生装置及びこれを搭載した蒸気調理器 |
ITMI20040319U1 (it) * | 2004-06-30 | 2004-09-30 | Whirlpool Co | Dispositivo generatore di vapore ad uso di cottura cibi in un forno |
ITMO20060306A1 (it) * | 2006-09-28 | 2008-03-29 | Angelo Po Grandi Cucine Spa | Dispositivo nebulizzatore per forni |
-
2004
- 2004-11-24 AT AT04819214T patent/ATE437340T1/de not_active IP Right Cessation
- 2004-11-24 EP EP04819214A patent/EP1687570B1/de active Active
- 2004-11-24 US US10/579,860 patent/US7728261B2/en active Active
- 2004-11-24 DE DE502004009796T patent/DE502004009796D1/de active Active
- 2004-11-24 WO PCT/EP2004/013329 patent/WO2005052452A1/de not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO2005052452A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020074306A1 (de) | 2018-10-08 | 2020-04-16 | Miwe Michael Wenz Gmbh | Verfahren zur dampferzeugung |
Also Published As
Publication number | Publication date |
---|---|
EP1687570B1 (de) | 2009-07-22 |
US7728261B2 (en) | 2010-06-01 |
DE502004009796D1 (de) | 2009-09-03 |
US20070084454A1 (en) | 2007-04-19 |
WO2005052452A1 (de) | 2005-06-09 |
ATE437340T1 (de) | 2009-08-15 |
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