EP2896894B1 - Appareil de traitement de vapeur doté d'une prise d'eau fixe - Google Patents

Appareil de traitement de vapeur doté d'une prise d'eau fixe Download PDF

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Publication number
EP2896894B1
EP2896894B1 EP14189195.2A EP14189195A EP2896894B1 EP 2896894 B1 EP2896894 B1 EP 2896894B1 EP 14189195 A EP14189195 A EP 14189195A EP 2896894 B1 EP2896894 B1 EP 2896894B1
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EP
European Patent Office
Prior art keywords
water
steam treatment
treatment device
jet pump
water jet
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.)
Active
Application number
EP14189195.2A
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German (de)
English (en)
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EP2896894A1 (fr
Inventor
Olivier Hoffmann
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.)
BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to EP14189195.2A priority Critical patent/EP2896894B1/fr
Publication of EP2896894A1 publication Critical patent/EP2896894A1/fr
Application granted granted Critical
Publication of EP2896894B1 publication Critical patent/EP2896894B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/48—Devices or arrangements for removing water, minerals or sludge from boilers ; Arrangement of cleaning apparatus in boilers; Combinations thereof with boilers
    • F22B37/50—Devices or arrangements for removing water, minerals or sludge from boilers ; Arrangement of cleaning apparatus in boilers; Combinations thereof with boilers for draining or expelling water
    • 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
    • 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 steam treatment apparatus having a fixed water connection, a service water tank and a lifting device for removing water from the lifting device.
  • a steam treatment apparatus having a fixed water connection, a service water tank and a device (hereinafter referred to as "lifting device") for removing used water from the service water tank
  • the lifting device comprises a water jet pump with a pressure water inlet, a suction water inlet and an outlet and wherein the pressurized water inlet is connected to the fixed water connection and the suction water inlet is connected to the second-hand water container.
  • the water jet pump can be sucked in the second-hand water tank largely noiseless water through the suction water inlet and discharged through the outlet again.
  • a mixture of water flowing in through the pressure water inlet then flows through the outlet and used water drawn in from the suction water inlet.
  • a water jet pump is also much cheaper than a pump and also virtually maintenance-free.
  • the water flowing in through the pressurized water inlet is preferably fresh water.
  • the steam treatment device has, for example, a steam treatment space, which can be acted upon or filled with steam for the steam treatment of food therein.
  • the steam may be generated directly in the steam treatment room or may be generated outside the steam treatment room by means of a steam generator or steam generator and then passed into the steam treatment room.
  • a steam generator or steam generator By means of the steam generator, water located in particular in an associated storage tank may be converted into steam.
  • the steam generator may be designed, for example, as a boiler or as a water heater.
  • the service water tank is used for receiving used water.
  • Under use water may be understood in particular water, which has already been used or used at least once.
  • Under-use water may be understood in particular condensed condensation condensate or steam, in particular if it has condensed in the steam treatment room.
  • the lifting device is basically a general device for removing water from the service water tank.
  • the lifting device may comprise or be a water jet pump.
  • the suction water inlet of the water jet pump is higher or is positioned as a maximum use water level or filling level of the service water tank.
  • the water jet pump may be higher or positioned than the service water tank.
  • the outlet of the water jet pump is connected to a waste tank of the steam treatment apparatus.
  • the waste tank may in particular be connected to a sewer leading to the outside. This causes any dirty used water to be safely removed from the steam generator.
  • outlet of the water jet pump is connected to a sewer line of the steam treatment device.
  • the used water can then be transported directly from the steam treatment device.
  • the outlet of the water jet pump is connected to a storage tank of a steam generator or promotes water in the storage tank.
  • the used water extracted from the service water tank is thus returned (together with the fresh water from the pressure water inlet) to the storage tank of the steam generator.
  • water can be saved because it may be evaporated several times, then condensed and returned to the evaporation tank in the storage tank of the steam generator again.
  • the used water is sucked out of a medium range of the service water tank to avoid contamination of the storage tank, by oily on a surface floating oil or by settling on the floor food particles.
  • the outlet of the water jet pump may be followed by a reversible water diverter to selectively direct the water discharged from the water jet pump to different destinations, e.g. in a waste water tank, a storage tank or a sewer pipe.
  • the water tank for used water is a siphon or siphon-like container, which can be filled by water collecting on the floor side in a steam treatment room. Thereby, the water condensed during and after a steam treatment process in the steam treatment room can be discharged.
  • the steam condenses for example, on the walls of the steam treatment room and accumulates on the bottom side.
  • the steam treatment apparatus may have a drain for the condensed (used) water introduced into the bottom, in particular in a deepest part of the floor, which leads into the siphon.
  • the process may be formed, for example, as a nozzle.
  • the siphon may be below the drain.
  • the siphon may have, especially at its upper portion, a drainpipe, e.g. is connected to the sewer or a waste tank of the steam treatment apparatus and which prevents overflow of the siphon in the steam treatment room.
  • a height position of the drain pipe determines a maximum fill level of the used water held therein.
  • a suction pipe connected to the suction water inlet of the water jet pump may in particular open into the siphon near the ground or into the bottom of the siphon in order to empty it to its height.
  • the suction line may have a hose-like section for easy installation and assembly. It is particularly preferred if a hose is connected on the one hand to the suction water inlet of the water jet pump and on the other hand to a connecting piece of the siphon.
  • the steam treatment device is adapted to set a vent of the steam treatment room by means of an optionally filled and emptied siphon.
  • the siphon is used as a functionally similar to a flap venting element.
  • the siphon prevents or allows venting of the cooking chamber by the water jet pump, e.g. for drying it.
  • a gas-technical connection between the cooking space and the areas of the steam treatment device (for example a waste water tank) adjoining the water jet pump is interrupted by the water contained therein.
  • the siphon is empty, such a connection is made and air, moisture, etc. can be withdrawn from the cooking chamber through the siphon, through the suction line and through the water jet pump, e.g. into a waste tank and e.g. continue through a connected to the waste water tank vent line to the outside.
  • the pressure water inlet of the water jet pump is preceded by a valve and the steam treatment device is adapted to set an activation of the water jet pump (in which water from the service water tank is sucked into the suction water inlet) by means of an actuation period of the valve. If an operating time of the valve is low, no vacuum is built in the water jet pump sufficient and / or maintained long enough to be used water from the service water tank in the Suction water inlet to be sucked in (the water jet pump is "deactivated").
  • the aspirator If an actuation period is long enough, a vacuum is built up in the aspirator that is sufficient and / or maintained long enough to draw used water from the service water tank into the suction water inlet (the aspirator is "activated").
  • the necessary for activation of the water jet pump minimum actuation duration of the valve depends on the specific structure of the steam treatment device. For example, to allow any amount of fresh water to be admitted from the service water tank without adding used water, the valve may be actuated repeatedly (and thus interrupted by pauses) for a period of time less than the minimum duration of operation.
  • the water jet pump is integrated into a fresh water supply pipe.
  • the water jet pump may be connected to a particular rigid pipe, in particular at the pressure water inlet and at the outlet.
  • To the suction water inlet may e.g. connect a rigid pipe or a flexible hose.
  • the water jet pump is integrated in a tank lid.
  • the tank lid may be a lid of a storage tank of a steam generator or a lid of a waste tank of the steam treatment apparatus.
  • the steam treatment device is a household appliance.
  • the steam treatment device may additionally have at least one heating element for heating the steam treatment space, eg electrically operable resistance heating elements, and / or at least one microwave generating device.
  • the steam treatment apparatus may be adapted, for example, for steaming without activation of a radiator and / or the microwave, for cooking without steam treatment or for a combined operation with heating / microwave introduction and steam treatment.
  • the single figure shows this as a sectional side view of a sketch of a steam treatment device in the form of a household Dampfgar réelles 1.
  • the household Dampfgar réelle 1 has a steam treatment room 2, the front-side charging opening 3 is closed by a door 4.
  • a partition 5 eg a baffle or an air-permeable room divider
  • Steam can be introduced into the steam treatment room 2, for example by providing a steam generator (not shown) arranged outside the steam treatment room 2, which generates steam and conducts it into the steam treatment room 2.
  • the steam may be generated in the steam treatment room 2, for example by heating in an evaporator dish (see Fig.) Mounted on the bottom side in the steam treatment room 2.
  • the steam is distributed in the steam treatment room 2.
  • the impeller 6 can also be used for generating a circulating air in the steam treatment room 2, e.g. for implementing a circulating air heating function.
  • one or more radiators may be present for heating the steam treatment room 2 (not shown), e.g. a ring radiator laterally surrounding the impeller 6, a top heat radiator in the region of a ceiling 9 of the steam treatment room 2 and / or a bottom heat radiator in the region of a bottom 10 of the steam treatment room. 2
  • the overflow hole 8 is connected via an overflow pipe 11 with a siphon-like sump 12 or Siphonhunt housed in a waste water tank 14.
  • the waste water tank 14 is connected to the ground with an outwardly leading sewer pipe 15. From the drip pan 12 overflowing water W may thus reach the sewer line 15.
  • a vent line 13 is present,
  • siphon-like sump 12 an open connection of the steam treatment room 2 is prevented from its environment, from which otherwise unhindered steam could escape.
  • condensing steam runs to the lowest point of the bottom 10, in which an outwardly adjoining drain pipe 16 opens.
  • the drain pipe 16 leads to a siphon 17 and may constitute a part of the siphon 17.
  • the siphon 17 has a container 18 for receiving the effluent 16 flowing through the used water G on.
  • the outlet pipe 16 opens more deeply in the container 18 than a wall side subsequent drain pipe 19.
  • the drain pipe 19 is connected to the sewer line 15 and determines a maximum filling height of the container 18th
  • a suction 20 into the container 18.
  • the preferably designed as a hose suction line 20 is connected at its other end to a lifting device in the form of a water jet pump 21, more precisely at the suction water inlet 22. Die Water jet pump 21 is shown enlarged in the section A. If the container is filled with the used water G through the suction line 20, a gas-technical connection between the steam treatment room 2 and the water jet pump 21 is interrupted, otherwise it is opened.
  • the water jet pump 21 also has both a pressure water inlet 24 connected to a fixed water connection 23 of the household steam cooking appliance 1 and an outlet 25 leading to the collecting trough 12.
  • a pressure P of two bar or more pressurized fresh water F is interposed between the fixed water connection 23 and the pressurized water inlet 24, a valve 26 is interposed.
  • the water jet pump 21 may be integrated into a fresh water supply pipe 27a, 27b by connecting the pressurized water inlet 24 and the outlet 25 to a respective rigid pipe 27a, 27b, respectively are.
  • the rigid tubes 27a, 27b can hold the water jet pump 21.
  • the water jet pump 21 is higher than the siphon 17th
  • the water jet pump 21 can be largely sucked into the siphon 17 or in its container 18 used useable water G through the suction water inlet 22 and discharged through the outlet 25 into the drip pan 12 largely silently.
  • Through the outlet 25 thus flows a mixture of fresh water F which has flowed through the pressurized water inlet 24 and used water G which has been sucked in from the suction water inlet 22.
  • the household steam cooking appliance 1 is set up to set an activation of the water jet pump 21 (in which water from the siphon 17 is sucked into the suction water inlet 22) by means of an actuation duration of the valve 26. If an actuation period of the valve 26 is low, no used water G is sucked out of the siphon 17 by means of the water jet pump 21, because either the negative pressure in the water jet pump 21 is sufficient to suck up the used water G and / or because the time for the used water G is not sufficient, to reach the water jet pump 21. This condition is also referred to as a "deactivated" water jet pump 21.
  • the household Dampfgar réelle 1 can also selectively set a filling state of the siphon 17 and the container 18 between "filled” and "emptied” to allow venting of the steam treatment room 2.
  • the container 18 is filled to over the lower opening of the downcomer 16 and emptied in the deflated condition to below the lower opening of the downcomer 16.
  • a gas-technical connection between the steam treatment room 2 and the vent line 13 of the waste water tank 14 is produced, via which then the steam treatment room 2 is vented.
  • this connection is interrupted by the used water G in the container 18.
  • a number may include exactly the specified number as well as a usual tolerance range, as long as this is not explicitly excluded.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Claims (11)

  1. Appareil de traitement à la vapeur (1) présentant une prise d'eau fixe (23), un réservoir d'eau utilisée (17, 18) destiné à réceptionner l'eau utilisée (G) provenant d'une chambre de traitement de vapeur (2) et un dispositif de levage destiné à retirer l'eau utilisée (G) hors du réservoir d'eau utilisée (17, 18),
    - lequel dispositif de levage présente une pompe à jet d'eau (21) munie d'une entrée d'eau sous pression (24), d'une entrée d'eau aspirée (22) et d'une sortie (25),
    - l'entrée d'eau sous pression (24) étant reliée à la prise d'eau fixe (23) et l'entrée d'eau aspirée (22) étant reliée au réservoir d'eau utilisée (17, 18),
    caractérisé en ce que
    - le réservoir d'eau utilisée est un siphon (17, 18) qui est remplissable avec de l'eau (G) se collectant côté fond dans une chambre de traitement de vapeur (2).
  2. Appareil de traitement à la vapeur (1) selon la revendication 1, caractérisé en ce que la sortie (25) de la pompe à jet d'eau (21) est reliée à un réservoir d'eau d'évacuation (14) de l'appareil de traitement à la vapeur (1).
  3. Appareil de traitement à la vapeur (1) selon la revendication 2, caractérisé en ce que le réservoir d'eau d'évacuation (14) présente un bac de récupération (12) en forme de siphon, qui est remplissable par l'intermédiaire de la sortie (25) de la pompe à jet d'eau (21) et dans lequel dépasse un tube de trop-plein (11), lequel, avec son autre extrémité (8), débouche dans la chambre de traitement de vapeur (2).
  4. Appareil de traitement à la vapeur (1) selon la revendication 1, caractérisé en ce que la sortie (25) de la pompe à jet d'eau (21) est reliée à une conduite d'eau d'évacuation (15) de l'appareil de traitement à la vapeur (1).
  5. Appareil de traitement à la vapeur (1) selon la revendication 1, caractérisé en ce que la sortie (25) de la pompe à jet d'eau (21) est reliée à un réservoir de stockage d'un générateur de vapeur (12).
  6. Appareil de traitement à la vapeur (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins l'entrée d'eau aspirée (22) de la pompe à jet d'eau (21) est plus haute qu'un niveau maximum d'eau utilisée du réservoir d'eau utilisée (17, 18).
  7. Appareil de traitement à la vapeur (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'appareil de traitement à la vapeur (1) est conçu pour régler une vidange de la chambre de traitement de vapeur (2) au moyen du siphon (17, 18) sélectivement rempli ou vidé.
  8. Appareil de traitement à la vapeur (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une vanne (26) est installée en amont de l'entrée d'eau sous pression (24) de la pompe à jet d'eau (21) et en ce que l'appareil de traitement à la vapeur (1) est conçu pour régler une activation de la pompe à jet d'eau (21) au moyen d'un temps d'actionnement de la vanne (26).
  9. Appareil de traitement à la vapeur (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la pompe à jet d'eau (21) est intégrée dans un tube d'arrivée d'eau fraîche (27a, 27b).
  10. Appareil de traitement à la vapeur (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la pompe à jet d'eau (21) est intégrée dans un couvercle de réservoir.
  11. Appareil de traitement à la vapeur (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'appareil de traitement à la vapeur (1) est un appareil ménager.
EP14189195.2A 2013-11-04 2014-10-16 Appareil de traitement de vapeur doté d'une prise d'eau fixe Active EP2896894B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14189195.2A EP2896894B1 (fr) 2013-11-04 2014-10-16 Appareil de traitement de vapeur doté d'une prise d'eau fixe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP13290268 2013-11-04
EP14189195.2A EP2896894B1 (fr) 2013-11-04 2014-10-16 Appareil de traitement de vapeur doté d'une prise d'eau fixe

Publications (2)

Publication Number Publication Date
EP2896894A1 EP2896894A1 (fr) 2015-07-22
EP2896894B1 true EP2896894B1 (fr) 2017-08-23

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ID=49641693

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EP (1) EP2896894B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202200023307A1 (it) * 2022-11-11 2024-05-11 Unox Spa Forno di cottura per alimenti con sistema di immissione di aria nella camera di cottura del forno

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0280782A1 (fr) * 1987-02-03 1988-09-07 E. Schönmann & Co. AG Générateur de vapeur
DE4116547C1 (en) * 1991-05-21 1992-09-10 Convotherm Elektrogeraete Gmbh, 8111 Eglfing, De Cooker using hot air or steam - has channel below door opening to catch condensation and fat
DE4116544C1 (en) * 1991-05-21 1992-10-01 Convotherm Elektrogeraete Gmbh, 8111 Eglfing, De Operating oven for cooking food by hot air, steam or both - providing offtake for fumes and condensate leading to condenser with water bath

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202200023307A1 (it) * 2022-11-11 2024-05-11 Unox Spa Forno di cottura per alimenti con sistema di immissione di aria nella camera di cottura del forno

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