EP2828582A1 - Door having an unventilated cavity for a domestic thermal treatment device - Google Patents

Door having an unventilated cavity for a domestic thermal treatment device

Info

Publication number
EP2828582A1
EP2828582A1 EP13710990.6A EP13710990A EP2828582A1 EP 2828582 A1 EP2828582 A1 EP 2828582A1 EP 13710990 A EP13710990 A EP 13710990A EP 2828582 A1 EP2828582 A1 EP 2828582A1
Authority
EP
European Patent Office
Prior art keywords
door
compensation element
pressure compensation
cavity
airgel
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
Application number
EP13710990.6A
Other languages
German (de)
French (fr)
Other versions
EP2828582B1 (en
Inventor
Joschka BARZ
Robert KÜHN
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
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2828582A1 publication Critical patent/EP2828582A1/en
Application granted granted Critical
Publication of EP2828582B1 publication Critical patent/EP2828582B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F24C15/02—Doors specially adapted for stoves or ranges
    • F24C15/04—Doors specially adapted for stoves or ranges with transparent panels

Definitions

  • the invention relates to a door for a household heat treatment device, in particular cooking chamber, at least comprising a laterally encircling frame, which is front covered by an at least partially opaque front cover and the inside is covered by an at least partially opaque inner cover, wherein the frame, the front cover and the Inner cover enclose an unvented cavity.
  • the non-ventilated cavity can be hermetically sealed, in which case due to thermal expansion and contraction of a fluid in the cavity, in particular gas, during operation of the heat treatment device, high mechanical alternating stresses can occur on the door, which can lead to their damage.
  • the cavity may be evacuated, but a long-term stable maintenance of the vacuum is very complex and expensive.
  • the non-ventilated cavity may have a simple vent for pressure equalization, through which, however, dust, vapor etc. can penetrate into the cavity. It is the object of the present invention to at least partially overcome the disadvantages of the prior art and, in particular, to provide an improved door for a domestic heat treatment appliance with at least one unvented cavity. This object is achieved according to the features of the independent claims. Preferred embodiments are in particular the dependent claims.
  • a door for a household heat treatment device at least comprising a laterally encircling frame, which is covered at the front by means of an at least partially opaque front cover and the inside is covered by an at least partially opaque inner cover, wherein the frame, the front cover and the inner cover enclose an unvented cavity.
  • an unventilated cavity in particular a cavity understood, which is not intended to be flowed through by an air flow to its cooling.
  • the frame may be a one-piece frame or a multi-part frame.
  • the frame may serve as a door profile.
  • the cavity is at least partially filled with translucent airgel, and the door has at least one semipermeable pressure compensation element for pressure equalization between the cavity and an environment.
  • the translucent airgel ensures a sufficient view through the door and thus insight into a heat treatment space to be closed by the door.
  • Airgel is also highly thermally insulating (thermal conductivity of only between 0.014 and 0.05 W / (m-K)), so that a heat flow from the heat treatment room in the outdoor area can be significantly reduced and the door is therefore very good heat insulating ausgestaltbar.
  • Another advantage of the airgel is that
  • Melting point is so high (with silica airgel eg at about 1200 ° C), that it at temperatures, as they occur in household appliances (up to 500 ° C in a cooking chamber of a baking oven during a pyrolysis operation), neither melts nor appreciably elastic or plastically deformed.
  • airgel is non-flammable and non-toxic.
  • airgel is transparent or practically transparent (quasi-transparent).
  • an airgel thickness-dependent insight into a heat treatment space is made possible, for example for monitoring food to be cooked. Occurring in individual cases material haze by moisture is typically reversible up to a material-dependent limit by heating (energy input from the outside) of the airgel on its Desorptionsenthalpie.
  • the airgel may only be translucent. This may be sufficient, for example, in domestic heat treatment appliances which do not require monitoring or evaluation of the object heat-treated in the heat treatment room, for example so-called sterilizers.
  • airgel can also trap fine dust particles or oil droplets, etc.
  • the (functional) semipermeable pressure compensation element at least holds solids (dust) and liquid (oil droplets, water droplets, etc.). back, but lets air through. This allows pressure equalization to take place, but prevents penetration of significantly detrimental liquids.
  • the "semipermeability" of the pressure compensation element is thus generally understood to be functional in this sense and is not limited to the use of a semipermeable membrane or a semipermeable filter.
  • the non-ventilated cavity may in particular be leak-tight, except for the at least one semipermeable pressure compensation element, which may result in undesired penetration of dust, liquid, etc. by gaps or the like. prevented.
  • the door may, in particular, be a cooking chamber door, since cooking rooms can typically be exposed to particularly high temperatures and consequently the cooking appliance doors have hitherto been designed in a particularly complex manner, e.g. equipped with a ventilation.
  • the cooking appliance door may in particular be a baking-oven door, in particular a baking-oven door of a pyrolysis-capable baking oven.
  • the type of door is not limited and may e.g. include a door of a bakery, a hinged door or a revolving door.
  • the at least one semipermeable pressure compensation element has or is at least one membrane. This is particularly simple, inexpensive and can be used with a small space requirement.
  • the membrane is preferably exchangeable.
  • the at least one semipermeable pressure compensation element has at least one combination of a valve and a filter unit.
  • a valve Through the valve, a volume of a compensating air flow is minimized, allowing a long-lasting filter capability of the filter unit.
  • the filter unit is preferably exchangeable.
  • the (functional) semipermeable pressure compensation element comprises a plurality of filters and at least one filter in the form of a desiccant.
  • the semipermeable pressure compensation element may comprise two oppositely-acting valves, of which, for example, a first valve opens outward with respect to the cavity so that overpressure from the cavity through the first valve can be vented, and the second valve opens inwardly with respect to the cavity, so that sub - Pressure in the cavity is compensated by opening the second valve.
  • the valves can be arranged spatially close, in particular in a structural unit, or can be arranged spatially separated.
  • the valves may in particular be check valves.
  • the valves may be designed so that one or more valves are open or closed at normal pressure (without pressure difference).
  • the second valve may cooperate with a filter equipped with desiccant as filter material, e.g. be upstream of this flow or downstream.
  • This filter is thus a general filter in the sense that it can retain certain substances when passing through a fluid, here in particular water.
  • the at least one semipermeable pressure compensation element is permeable to air and liquid impermeable.
  • air permeability By means of the air permeability, a pressure equalization is made possible by means of the impermeability to liquid (for substances in the liquid state, including droplets) prevents penetration of oil, water, etc.
  • the at least one semipermeable pressure compensation element is vapor-permeable. This allows the use of a comparatively simple and inexpensive pressure compensation element. Although it can get moisture from the environment into the cavity (eg when the door is cooled), however, this amount is relatively low due to the retention of droplets and can also be easily evaporated again in a heating of the cavity. It is also an embodiment that the at least one semipermeable pressure compensation element is arranged in a cold region of the cooking chamber door. This results in the advantage that the pressure compensation element is thermally loaded comparatively low. A cold region of the door may, in particular, be understood as meaning an area which does not directly cover a charging opening of the heat treatment space and consequently is not exposed to direct heat radiation from the heat treatment space.
  • the at least one semipermeable pressure equalization element is arranged in the frame.
  • the pressure compensation element is positioned in a region in which it is opposite a flange in a closed position of the door and thus protected against external stress.
  • the frame is relatively cold.
  • the at least one semipermeable pressure compensation element may, in particular, be located in a left-side and / or right-side section of the frame.
  • the at least one semipermeable pressure compensation element is on the underside portion of the frame.
  • any condensate accumulating in the cavity can be dissipated particularly effectively.
  • a water film can form more difficult on the pressure compensation element.
  • Particularly preferred is a slightly inclined mounting.
  • the at least one semipermeable pressure compensation element is covered by a permeable protective cover, e.g. a grid or perforated screen.
  • the front cover is a front glass panel and the inner cover is an inner glass panel. This allows a particularly large viewing surface.
  • the front cover and / or the inner cover may have a frame in which a viewing window is inserted.
  • the airgel is in the form of at least one airgel disc.
  • pane is understood to mean a general transparent molded body or monolith, which in particular also has a mechanical appearance Be sensible plate-shaped or disc-shaped.
  • the airgel disc can thus be designed in particular as a plate.
  • the door then has at least one intermediate disc (between the windscreen and the inner pane) in the form of an airgel disc.
  • a very steep temperature gradient can occur on the airgel disk during operation of a household heat treatment device, so that a surface temperature on the inside (facing the heat treatment chamber) of the airgel disk is high, which results in heat removal from the heat treatment space (eg by air cooling and / or thermal radiation) low, but a surface temperature on the (the heat treatment space facing away) outside or front side is very low, so that here a high contact safety is possible.
  • a waiver of a door ventilation is also possible for very high temperatures, which in turn creates new space and thus allows more freedom of design.
  • at least one conventional glass pane can be replaced by the at least one airgel pane, which results in considerable weight savings.
  • a single-piece airgel disc (or airgel plate) has a thickness between about 5 mm to 40 mm, preferably between about 10 mm and 20 mm, more preferably between about 12 mm and 16 mm ,
  • the at least one airgel disc is separated at least with respect to the inner pane by a gap.
  • This gap further improves thermal insulation since direct heat conduction through contact between the inner pane and the adjacent airgel pane is thus prevented and heat transfer can only be generated by radiant heat and by gas movement or convection in the gap.
  • the gap not more than 4 mm, in particular not more than 2 mm, in particular not more than about 1 mm, measures. It is an advantageous for avoiding unwanted contacting development that the gap is at least 0, 1 mm wide.
  • the at least one airgel disc is also separated from the front screen by a gap, in particular to avoid contact with the windscreen. Also, a plurality of spaced-apart airgel disks may be housed in the cavity.
  • the at least one airgel disc is made of silica airgel.
  • the object is also achieved by a household heat treatment device having at least one heat treatment space that can be closed by a door, wherein the door is a door as described above. This gives the same benefits to the door, and the household heat treatment device can be designed in an analogous manner.
  • the household heat treatment device may preferably be a cooking appliance, in particular having an oven, in particular with a pyrolysis capability.
  • the Fig. Shows a door for a household heat treatment device in the form of a oven door 1 1 for an oven 12.
  • the oven door 1 1 is shown in a view obliquely from the front with a left-sided portion 14 of a frame 13 shown offset.
  • the oven door 1 1 closes in the illustrated upright position indicated by dashed lines heat treatment space in the form of a furnace chamber O.
  • the oven door 1 1 is in a horizontal open position pivoted (and back) and has to Hinge 21 on.
  • the oven space O and the oven door 1 1 represent parts of the oven 12.
  • the frame 13 is laterally configured circumferentially and covered on the front side (facing away from the oven space O) by means of a front cover in the form of a front glass pane 15. On the inside (facing the furnace chamber O), the frame is covered by means of an inner cover in the form of an inner glass pane 16.
  • the frame 13, the front glass pane 15 and the inner glass pane 16 enclose an unvented cavity 17 tightly.
  • Within the cavity 17 are two superimposed, plate-shaped airgel discs 18, 19 of a respective thickness between about 12 mm and 16 mm.
  • the inner airgel disc 18 is separated from the inner glass plate 16 by a gap d of more than 0, 1 mm, but not more than 1 mm.
  • the outer airgel disc 19 is opposite the front glass pane 15 is separated by a gap. Since the airgel discs 18, 19 are translucent and translucent, a large field of view through the oven door 1 1 is made possible in the oven O space.
  • the oven door 1 1 has a corresponding semi-permeable pressure compensation element 20.
  • the pressure compensation element 20 is arranged here in a lower region of the left-side portion 14 of the frame 13 and thus in a cold region of the oven door 1. 1.
  • the pressure compensation element 20 comprises at least one membrane.
  • the pressure compensation element 20 is permeable to air and permeable to vapor, but liquid impermeable.
  • the pressure compensation element 20 is surrounded by a permeable protective cover 22, e.g. a grid, covered.
  • the oven space O is heated, which in turn heats the cavity 17.
  • the expanding in the cavity 17 during heating gas and possibly moisture present in moisture can escape from the pressure compensation element 20, so that a pressure-induced mechanical stress on the oven door 1 1 can be prevented.
  • the airgel discs 18, 19 By means of the airgel discs 18, 19, a stronger heating of the front glass pane 15 and the non-ventilated oven door 1 1 can be prevented, since the airgel discs 18, 19 are highly thermally insulating. Due to heating of the airgel disks 18, 19, it is possible to remove any moisture held in them.
  • the front cover and / or the inner cover may at least partially be integrated with the frame.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Ovens (AREA)

Abstract

The door (11) is intended for a domestic thermal treatment device (12), in particular a cooking chamber door, and has at least one laterally peripheral frame (13), which is covered on the front side by means of a front cover (15) through which one can see at least in some areas and is covered on the inside by means of an inner cover (16) through which one can see at least in some areas, wherein the frame (13), the front cover (15), and the inner cover (16) enclose an unventilated cavity (17). The cavity (17) is filled at least partially with transparent aerogel, and the door (11) has at least one semipermeable pressure-equalization element (20) for equalizing pressure between the cavity (17) and an environment (U). A domestic thermal treatment device (12), in particular a cooking device, is equipped with at least one thermal treatment chamber (O), which can be closed by means of a door (11).

Description

Tür mit unbelüftetem Hohlraum für ein Haushalts- Wärmebehandlungsgerät  Door with unvented cavity for a household heat treatment device
Die Erfindung betrifft eine Tür für ein Haushalts-Wärmebehandlungsgerät, insbesondere Garraumtür, mindestens aufweisend einen seitlich umlaufenden Rahmen, welcher frontseitig mittels einer zumindest bereichsweise blickdurchlässigen Frontabdeckung abgedeckt ist und innenseitig mittels einer zumindest bereichsweise blickdurchlässigen Innenabdeckung abgedeckt ist, wobei der Rahmen, die Frontabdeckung und die Innenabdeckung einen unbelüfteten Hohlraum umschließen. The invention relates to a door for a household heat treatment device, in particular cooking chamber, at least comprising a laterally encircling frame, which is front covered by an at least partially opaque front cover and the inside is covered by an at least partially opaque inner cover, wherein the frame, the front cover and the Inner cover enclose an unvented cavity.
Der unbelüftete Hohlraum kann hermetisch dicht sein, wobei dann aufgrund einer thermischen Ausdehnung und Kontraktion eines in dem Hohlraum befindlichen Fluids, insbesondere Gases, bei einem Betrieb des Wärmebehandlungsgeräts hohe mechanische Wechselbeanspruchungen an der Tür auftreten können, die zu deren Beschädigung füh- ren können. Alternativ mag der Hohlraum evakuiert sein, wobei jedoch eine langzeitstabile Aufrechterhaltung des Vakuums sehr aufwändig und teuer ist. Der unbelüftete Hohlraum mag eine einfache Belüftungsöffnung zum Druckausgleich aufweisen, durch welche jedoch Staub, Wrasen usw. in den Hohlraum eindringen können. Es ist die Aufgabe der vorliegenden Erfindung, die Nachteile des Standes der Technik zumindest teilweise zu überwinden und insbesondere eine verbesserte Tür für ein Haus- halts-Wärmebehandlungsgerät mit mindestens einem unbelüfteten Hohlraum bereitzustellen. Diese Aufgabe wird gemäß den Merkmalen der unabhängigen Ansprüche gelöst. Bevorzugte Ausführungsformen sind insbesondere den abhängigen Ansprüchen entnehmbar. The non-ventilated cavity can be hermetically sealed, in which case due to thermal expansion and contraction of a fluid in the cavity, in particular gas, during operation of the heat treatment device, high mechanical alternating stresses can occur on the door, which can lead to their damage. Alternatively, the cavity may be evacuated, but a long-term stable maintenance of the vacuum is very complex and expensive. The non-ventilated cavity may have a simple vent for pressure equalization, through which, however, dust, vapor etc. can penetrate into the cavity. It is the object of the present invention to at least partially overcome the disadvantages of the prior art and, in particular, to provide an improved door for a domestic heat treatment appliance with at least one unvented cavity. This object is achieved according to the features of the independent claims. Preferred embodiments are in particular the dependent claims.
Die Aufgabe wird gelöst durch eine Tür für ein Haushalts-Wärmebehandlungsgerät, mindestens aufweisend einen seitlich umlaufenden Rahmen, welcher frontseitig mittels einer zumindest bereichsweise blickdurchlässigen Frontabdeckung abgedeckt ist und innenseitig mittels einer zumindest bereichsweise blickdurchlässigen Innenabdeckung abgedeckt ist, wobei der Rahmen, die Frontabdeckung und die Innenabdeckung einen unbelüfteten Hohlraum umschließen. Unter einem unbelüfteten Hohlraum wird insbesondere ein Hohl- räum verstanden, welcher nicht dazu vorgesehen ist, von einem Luftstrom zu seiner Kühlung durchströmt zu werden. Der Rahmen kann ein einteiliger Rahmen oder ein mehrteiliger Rahmen sein. Der Rahmen mag als ein Türprofil dienen. Ferner ist der Hohlraum zumindest teilweise mit lichtdurchlässigem Aerogel gefüllt, und die Tür weist mindestens ein semipermeables Druckausgleichselement zum Druckausgleich zwischen dem Hohlraum und einer Umgebung auf. The object is achieved by a door for a household heat treatment device, at least comprising a laterally encircling frame, which is covered at the front by means of an at least partially opaque front cover and the inside is covered by an at least partially opaque inner cover, wherein the frame, the front cover and the inner cover enclose an unvented cavity. Under an unventilated cavity, in particular a cavity understood, which is not intended to be flowed through by an air flow to its cooling. The frame may be a one-piece frame or a multi-part frame. The frame may serve as a door profile. Furthermore, the cavity is at least partially filled with translucent airgel, and the door has at least one semipermeable pressure compensation element for pressure equalization between the cavity and an environment.
Durch das lichtdurchlässige Aerogel wird ein ausreichender Durchblick durch die Tür und damit Einblick in einen von der Tür zu verschließenden Wärmebehandlungsraum gewährleistet. Aerogel ist ferner hochgradig wärmedämmend (Wärmeleitfähigkeit von nur zwischen 0,014 und 0,05 W/(m-K)), so dass ein Wärmestrom von dem Wärmebehandlungsraum in den Außenbereich erheblich reduziert werden kann und die Tür folglich sehr gut wärmeisolierend ausgestaltbar ist. Ein weiterer Vorteil des Aerogels ist, dass sein The translucent airgel ensures a sufficient view through the door and thus insight into a heat treatment space to be closed by the door. Airgel is also highly thermally insulating (thermal conductivity of only between 0.014 and 0.05 W / (m-K)), so that a heat flow from the heat treatment room in the outdoor area can be significantly reduced and the door is therefore very good heat insulating ausgestaltbar. Another advantage of the airgel is that
Schmelzpunkt so hoch liegt (bei Silica-Aerogel z.B. bei etwa 1200°C), dass es bei Temperaturen, wie sie bei Haushaltsgeräten auftreten (von bis zu 500°C in einem Garraum eines Backofens während eines Pyrolysebetriebs), weder schmilzt noch sich nennenswert elastisch oder plastisch verformt. Zudem ist Aerogel unbrennbar und ungiftig. Darüber hinaus ist Aerogel transparent oder praktisch transparent (quasi-transparent). So wird insbesondere eine aerogel dickenabhängige Einsicht in einen Wärmebehandlungsraum ermöglicht, beispielsweise zur Überwachung von Gargut. Eine in Einzelfällen auftretende Materialeintrübung durch Feuchtigkeit ist typischerweise bis zu einem materialabhängigen Grenzwert reversibel durch Aufheizen (Energiezufuhr von außen) des Aerogels auf seine Desorptionsenthalpie. Jedoch ist dies nicht zwingend, und das Aerogel mag lediglich transluzent sein. Dies mag beispielsweise bei Haushalts-Wärmebehandlungs- geräten ausreichend sein, welche keine Überwachung oder Bewertung des in dem Wärmebehandlungsraum wärmebehandelten Objekts benötigen, z.B. bei sog. Sterilisatoren. Neben einer Aufnahme von Feuchtigkeit kann Aerogel auch feine Staubteilchen oder Öl- tröpfchen usw. auffangen. Um zu verhindern, dass Staub, Wrasen (einschließlich Ölen) oder in größerem Maß Wasser in den Hohlraum gelangen und eine Funktion des Aerogels beeinträchtigen können, hält das (funktional) semipermeable Druckausgleichselement zumindest Feststoffe (Staub) und Flüssigkeit (Öltröpfchen, Wassertröpfchen usw.) zurück, lässt aber Luft durch. Dadurch kann ein Druckausgleich stattfinden, aber ein Eindringen signifikant nachteiliger Flüssigkeiten verhindert werden. Insgesamt wird dadurch eine mechanisch geringer belastete, preiswerte und mit geringem Aufwand reinigbare Tür bereitgestellt. Durch das Aerogel wird insbesondere eine schmale und leichte Tür bereit- gestellt. Die "Semipermeabilitat" des Druckausgleichselement ist also allgemein funktional in diesem Sinne zu verstehen und nicht auf eine Verwendung einer semipermeablen Membran oder eines semipermeablen Filters beschränkt. Melting point is so high (with silica airgel eg at about 1200 ° C), that it at temperatures, as they occur in household appliances (up to 500 ° C in a cooking chamber of a baking oven during a pyrolysis operation), neither melts nor appreciably elastic or plastically deformed. In addition, airgel is non-flammable and non-toxic. In addition, airgel is transparent or practically transparent (quasi-transparent). Thus, in particular, an airgel thickness-dependent insight into a heat treatment space is made possible, for example for monitoring food to be cooked. Occurring in individual cases material haze by moisture is typically reversible up to a material-dependent limit by heating (energy input from the outside) of the airgel on its Desorptionsenthalpie. However, this is not mandatory and the airgel may only be translucent. This may be sufficient, for example, in domestic heat treatment appliances which do not require monitoring or evaluation of the object heat-treated in the heat treatment room, for example so-called sterilizers. In addition to absorbing moisture, airgel can also trap fine dust particles or oil droplets, etc. To prevent dust, vapors (including oils) or, to a greater extent, water from entering the cavity and affecting a function of the airgel, the (functional) semipermeable pressure compensation element at least holds solids (dust) and liquid (oil droplets, water droplets, etc.). back, but lets air through. This allows pressure equalization to take place, but prevents penetration of significantly detrimental liquids. Overall, this provides a mechanically less loaded, inexpensive door which can be cleaned with little effort. In particular, a narrow and light door is provided by the airgel. The "semipermeability" of the pressure compensation element is thus generally understood to be functional in this sense and is not limited to the use of a semipermeable membrane or a semipermeable filter.
Der unbelüftete Hohlraum kann insbesondere bis auf das mindestens eine semipermeab- le Druckausgleichselement dicht sein, was ein unerwünschtes Eindringen von Staub, Flüssigkeit usw. durch Spalte o.ä. verhindert. The non-ventilated cavity may in particular be leak-tight, except for the at least one semipermeable pressure compensation element, which may result in undesired penetration of dust, liquid, etc. by gaps or the like. prevented.
Die Tür mag insbesondere eine Garraumtür sein, da in Garräumen typischerweise besonders hohe Temperaturen auftreten können und deren Gargerätetüren folglich bisher be- sonders aufwändig gestaltet sind, z.B. mit einer Belüftung ausgerüstet sind. Die Gargerätetür kann insbesondere eine Backofentür sein, insbesondere eine Backofentür eines pyrolysefähigen Backofens. The door may, in particular, be a cooking chamber door, since cooking rooms can typically be exposed to particularly high temperatures and consequently the cooking appliance doors have hitherto been designed in a particularly complex manner, e.g. equipped with a ventilation. The cooking appliance door may in particular be a baking-oven door, in particular a baking-oven door of a pyrolysis-capable baking oven.
Die Art der Tür ist nicht beschränkt und kann z.B. eine Tür eines Backwagens, eine Klapptür oder eine Drehtür umfassen. The type of door is not limited and may e.g. include a door of a bakery, a hinged door or a revolving door.
Es ist eine Ausgestaltung, dass das mindestens eine semipermeable Druckausgleichselement mindestens eine Membran aufweist oder ist. Diese ist besonders einfach, preiswert und mit einer geringen Anforderung an Bauraum einsetzbar. Die Membran ist bevor- zugt austauschbar. It is an embodiment that the at least one semipermeable pressure compensation element has or is at least one membrane. This is particularly simple, inexpensive and can be used with a small space requirement. The membrane is preferably exchangeable.
Es ist noch eine Ausgestaltung, dass das mindestens eine semipermeable Druckausgleichselement mindestens eine Kombination aus einem Ventil und einer Filtereinheit aufweist. Durch das Ventil ist ein Volumen eines Ausgleichsluftstroms auf ein Mindestmaß begrenzbar, was eine lang andauernde Filterfähigkeit der Filtereinheit ermöglicht. Die Filtereinheit ist bevorzugt austauschbar. It is still an embodiment that the at least one semipermeable pressure compensation element has at least one combination of a valve and a filter unit. Through the valve, a volume of a compensating air flow is minimized, allowing a long-lasting filter capability of the filter unit. The filter unit is preferably exchangeable.
Es wird besonders bevorzugt, dass das (funktional) semipermeable Druckausgleichselement mehrere Filter und mindestens einen Filter in Form eines Trockenmittels aufweist. Insbesondere mag das semipermeable Druckausgleichselement zwei entgegengesetzt wirkende Ventile aufweisen, von denen z.B. ein erstes Ventil bezüglich des Hohlraums nach außen öffnet, so dass Überdruck aus dem Hohlraum durch das erste Ventil ablassbar ist, und zweites Ventil bezüglich des Hohlraums nach innen öffnet, so dass Unter- druck in dem Hohlraum durch Öffnung des zweiten Ventils ausgleichbar ist. It is particularly preferred that the (functional) semipermeable pressure compensation element comprises a plurality of filters and at least one filter in the form of a desiccant. In particular, the semipermeable pressure compensation element may comprise two oppositely-acting valves, of which, for example, a first valve opens outward with respect to the cavity so that overpressure from the cavity through the first valve can be vented, and the second valve opens inwardly with respect to the cavity, so that sub - Pressure in the cavity is compensated by opening the second valve.
Die Ventile können räumlich nah angeordnet sein, insbesondere in einer baulichen Einheit, oder können räumlich getrennt angeordnet sein. Die Ventile können insbesondere Rückschlagventile sein. The valves can be arranged spatially close, in particular in a structural unit, or can be arranged spatially separated. The valves may in particular be check valves.
Die Ventile können so ausgestaltet sein, dass ein oder mehrere Ventile bei Normaldruck (ohne Druckunterschied) offen oder geschlossen, sind. Insbesondere das zweite Ventil kann mit einem mit Trocknungsmittel als Filtermaterial ausgerüsteten Filter zusammenwirken, z.B. diesem strömungstechnisch vorgeschaltet oder nachgeschaltet sein. Dieser Filter ist also ein allgemeiner Filter in dem Sinne, dass er bestimmte Stoffe bei Durchgang eines Fluids zurückhalten kann, hier insbesondere Wasser. The valves may be designed so that one or more valves are open or closed at normal pressure (without pressure difference). In particular, the second valve may cooperate with a filter equipped with desiccant as filter material, e.g. be upstream of this flow or downstream. This filter is thus a general filter in the sense that it can retain certain substances when passing through a fluid, here in particular water.
Es ist eine weitere Ausgestaltung, dass das mindestens eine semipermeable Druckausgleichselement luftdurchlässig und flüssigkeitsundurchlässig ist. Mittels der Luftdurchlässigkeit wird ein Druckausgleich ermöglicht, mittels der Undurchlässigkeit für Flüssigkeit (für Stoffe im flüssigen Zustand, einschließlich Tröpfchen) ein Eindringen von Öl, Wasser usw. verhindert. It is a further embodiment that the at least one semipermeable pressure compensation element is permeable to air and liquid impermeable. By means of the air permeability, a pressure equalization is made possible by means of the impermeability to liquid (for substances in the liquid state, including droplets) prevents penetration of oil, water, etc.
Es ist noch eine weitere Ausgestaltung, dass das mindestens eine semipermeable Druckausgleichselement dampfdurchlässig ist. Dies ermöglicht einen Einsatz eines vergleichsweise einfachen und preiswerten Druckausgleichselements. Zwar kann dabei Feuchtigkeit aus der Umgebung in den Hohlraum gelangen (z.B. bei einer Abkühlung der Tür), jedoch ist diese Menge aufgrund der Zurückhaltung von Tröpfchen vergleichsweise gering und kann bei einer Erwärmung des Hohlraums auch einfach wieder ausgedampft werden. Es ist auch eine Ausgestaltung, dass das mindestens eine semipermeable Druckausgleichselement in einem Kaltbereich der Garraumtür angeordnet ist. Dies ergibt den Vorteil, dass das Druckausgleichselement thermisch vergleichsweise gering belastet wird. Unter einem Kaltbereich der Tür kann insbesondere ein Bereich verstanden werden, wel- eher nicht direkt eine Beschickungsöffnung des Wärmebehandlungsraums überdeckt und folglich keiner direkten Wärmeeinstrahlung aus dem Wärmebehandlungsraum ausgesetzt ist. It is yet a further embodiment that the at least one semipermeable pressure compensation element is vapor-permeable. This allows the use of a comparatively simple and inexpensive pressure compensation element. Although it can get moisture from the environment into the cavity (eg when the door is cooled), however, this amount is relatively low due to the retention of droplets and can also be easily evaporated again in a heating of the cavity. It is also an embodiment that the at least one semipermeable pressure compensation element is arranged in a cold region of the cooking chamber door. This results in the advantage that the pressure compensation element is thermally loaded comparatively low. A cold region of the door may, in particular, be understood as meaning an area which does not directly cover a charging opening of the heat treatment space and consequently is not exposed to direct heat radiation from the heat treatment space.
Es ist ferner eine Ausgestaltung, dass das mindestens eine semipermeable Druckaus- gleichselement in dem Rahmen angeordnet ist. Dadurch ist das Druckausgleichselement in einem Bereich positioniert, in dem es in einer geschlossenen Stellung der Tür einem Flansch gegenüberliegt und so vor einer äußeren Beanspruchung geschützt ist. Zudem ist der Rahmen vergleichsweise kalt. Das mindestens eine semipermeable Druckausgleichselement mag sich insbesondere in einem linksseitigen und/oder rechtsseitigen Abschnitt des Rahmens befinden. It is also an embodiment that the at least one semipermeable pressure equalization element is arranged in the frame. As a result, the pressure compensation element is positioned in a region in which it is opposite a flange in a closed position of the door and thus protected against external stress. In addition, the frame is relatively cold. The at least one semipermeable pressure compensation element may, in particular, be located in a left-side and / or right-side section of the frame.
Es ist noch eine Weiterbildung, dass sich das mindestens eine semipermeable Druckausgleichselement unterseitigen Abschnitt des Rahmens befindet. Dadurch kann eventuell in dem Hohlraum anfallendes Kondenswasser besonders effektiv abgeführt werden. Zudem kann sich so schwerer ein Wasserfilm auf dem Druckausgleichselement bilden. Insbesondere bevorzugt ist eine leicht geneigte Montage. It is still a further development that the at least one semipermeable pressure compensation element is on the underside portion of the frame. As a result, any condensate accumulating in the cavity can be dissipated particularly effectively. In addition, a water film can form more difficult on the pressure compensation element. Particularly preferred is a slightly inclined mounting.
Es ist eine zum Schutz vor einer äußeren mechanischen Beanspruchung bevorzugte Ausgestaltung, dass das mindestens eine semipermeable Druckausgleichselement von einer durchlässigen Schutzabdeckung abgedeckt ist, z.B. einem Gitter oder Lochsieb. It is a preferred embodiment for protection against external mechanical stress that the at least one semipermeable pressure compensation element is covered by a permeable protective cover, e.g. a grid or perforated screen.
Es ist außerdem eine Ausgestaltung, dass die Frontabdeckung eine Frontglasscheibe und die Innenabdeckung eine Innenglasscheibe ist. Dies ermöglicht eine besonders große Sichtfläche. Alternativ mögen die Frontabdeckung und/oder die Innenabdeckung einen Rahmen aufweisen, in welchen ein Sichtfenster eingesetzt ist. It is also an embodiment that the front cover is a front glass panel and the inner cover is an inner glass panel. This allows a particularly large viewing surface. Alternatively, the front cover and / or the inner cover may have a frame in which a viewing window is inserted.
Es ist noch eine Ausgestaltung, dass das Aerogel in Form mindestens einer Aerogel- Scheibe vorliegt. Hierbei kann unter "Scheibe" ein allgemeiner Durchsicht-Formkörper oder Monolith verstanden werden, welcher insbesondere auch in einem mechanischen Sinne plattenförmig oder scheibenförmig ausgestaltet sein kann. Die Aerogel-Scheibe kann also insbesondere auch als eine Platte ausgebildet sein. Die Tür weist dann also mindestens eine Zwischenscheibe (zwischen der Frontscheibe und der Innenscheibe) in Form einer Aerogel-Scheibe auf. Dadurch wird auf einfache Weise eine großflächige Wärmedämmung ermöglicht. An der Aerogel-Scheibe kann sich im Betrieb eines Haus- halts-Wärmebehandlungsgeräts ein sehr steiler Temperaturgradient einstellen, so dass eine Oberflächentemperatur auf der (dem Wärmebehandlungsraum zugewandten) Innenseite der Aerogel-Scheibe hoch ist, was einen Wärmeabfluss aus dem Wärmebehandlungsraum (z.B. durch Luftkühlung und/oder Wärmestrahlung) gering hält, jedoch eine Oberflächentemperatur auf der (dem Wärmebehandlungsraum abgewandten) Außenseite oder Frontseite sehr gering ist, so dass hier eine hohe Berührsicherheit ermöglicht wird. So wird beispielsweise ein Verzicht auf eine Türbelüftung auch für sehr hohe Temperaturen ermöglicht, was wiederum neue Bauräume entstehen lässt und damit mehr Gestaltungsfreiheit ermöglicht. Ferner lässt sich durch die mindestens eine Aerogel-Scheibe mindestens eine herkömmliche Glasscheibe ersetzen, was eine erhebliche Gewichtsersparnis bringt. It is still an embodiment that the airgel is in the form of at least one airgel disc. In this case, "pane" is understood to mean a general transparent molded body or monolith, which in particular also has a mechanical appearance Be sensible plate-shaped or disc-shaped. The airgel disc can thus be designed in particular as a plate. The door then has at least one intermediate disc (between the windscreen and the inner pane) in the form of an airgel disc. As a result, a large-area insulation is made possible in a simple manner. A very steep temperature gradient can occur on the airgel disk during operation of a household heat treatment device, so that a surface temperature on the inside (facing the heat treatment chamber) of the airgel disk is high, which results in heat removal from the heat treatment space (eg by air cooling and / or thermal radiation) low, but a surface temperature on the (the heat treatment space facing away) outside or front side is very low, so that here a high contact safety is possible. Thus, for example, a waiver of a door ventilation is also possible for very high temperatures, which in turn creates new space and thus allows more freedom of design. Furthermore, at least one conventional glass pane can be replaced by the at least one airgel pane, which results in considerable weight savings.
Es ist eine weitere Ausgestaltung, dass in dem Hohlraum mindestens zwei aufeinander aufgelegte, einzeln hergestellte Aerogel-Scheiben untergebracht sind, insbesondere plat- tenförmige Scheiben. Diese Ausgestaltung weist den Vorteil auf, dass sie vergleichsweise einfach und preiswert herstellbar ist, weil dünne Aerogel-Scheiben erheblich schneller herstellbar sind als dicke Aerogel-Scheiben. Es wird bevorzugt, dass eine einzeln hergestellte Aerogel-Scheibe (oder Aerogel-Platte) eine Dicke zwischen ca. 5 mm bis 40 mm, bevorzugt zwischen ca. 10 mm und 20 mm, besonders bevorzugt zwischen ca. 12 mm und 16 mm, aufweist. It is a further embodiment that in the cavity at least two superposed, individually produced airgel disks are housed, in particular plate-shaped discs. This embodiment has the advantage that it is relatively easy and inexpensive to produce, because thin airgel discs are much faster to produce than thick airgel discs. It is preferred that a single-piece airgel disc (or airgel plate) has a thickness between about 5 mm to 40 mm, preferably between about 10 mm and 20 mm, more preferably between about 12 mm and 16 mm ,
Es ist noch eine weitere Ausgestaltung, dass die mindestens eine Aerogel-Scheibe zumindest gegenüber der Innenscheibe durch einen Spalt getrennt ist. Dieser Spalt verbessert eine Wärmedämmung weiter, da so eine direkte Wärmeleitung durch einen Kontakt zwischen der Innenscheibe und der benachbarten Aerogel-Scheibe verhindert wird und ein Wärmeübertrag nur durch Strahlungswärme und durch eine Gasbewegung oder Kon- vektion in dem Spalt erzeugt werden kann. Es ist ferner eine Ausgestaltung, dass der Spalt nicht mehr als 4 mm, insbesondere nicht mehr als 2 mm, insbesondere nicht mehr als ca. 1 mm, misst. Es ist eine für eine Vermeidung einer ungewollten Kontaktierung vorteilhafte Weiterbildung, dass der Spalt mindestens 0, 1 mm breit ist. It is yet another embodiment that the at least one airgel disc is separated at least with respect to the inner pane by a gap. This gap further improves thermal insulation since direct heat conduction through contact between the inner pane and the adjacent airgel pane is thus prevented and heat transfer can only be generated by radiant heat and by gas movement or convection in the gap. It is also an embodiment that the gap not more than 4 mm, in particular not more than 2 mm, in particular not more than about 1 mm, measures. It is an advantageous for avoiding unwanted contacting development that the gap is at least 0, 1 mm wide.
Es ist noch eine Weiterbildung, dass die mindestens eine Aerogel-Scheibe auch gegenüber der Frontscheibe durch einen Spalt getrennt ist, insbesondere um eine Kontaktierung mit der Frontscheibe zu vermeiden. Auch mögen mehrere zueinander beabstandete Aerogel-Scheiben in dem Hohlraum untergebracht sein. It is still a development that the at least one airgel disc is also separated from the front screen by a gap, in particular to avoid contact with the windscreen. Also, a plurality of spaced-apart airgel disks may be housed in the cavity.
Es ist außerdem eine Ausgestaltung, dass die mindestens eine Aerogel-Scheibe aus Sili- ca-Aerogel besteht. It is also an embodiment that the at least one airgel disc is made of silica airgel.
Die Aufgabe wird auch gelöst durch ein Haushalts-Wärmebehandlungsgerät mit mindestens einem durch eine Tür verschließbaren Wärmebehandlungsraum, wobei die Tür eine Tür wie oben beschrieben ist. Dies ergibt die gleichen Vorteile für die Tür, und das Haus- halts-Wärmebehandlungsgerät kann analog ausgestaltet sein. The object is also achieved by a household heat treatment device having at least one heat treatment space that can be closed by a door, wherein the door is a door as described above. This gives the same benefits to the door, and the household heat treatment device can be designed in an analogous manner.
So mag das Haushalts-Wärmebehandlungsgerät bevorzugt ein Gargerät sein, insbesondere aufweisend einen Backofen, insbesondere mit einer Pyrolysefähigkeit. Thus, the household heat treatment device may preferably be a cooking appliance, in particular having an oven, in particular with a pyrolysis capability.
In den folgenden Figuren wird die Erfindung anhand eines Ausführungsbeispiels schema- tisch genauer beschrieben. Dabei können zur Übersichtlichkeit gleiche oder gleichwirkende Elemente mit gleichen Bezugszeichen versehen sein. In the following figures, the invention with reference to an embodiment is described schematically in more detail. In this case, the same or equivalent elements may be provided with the same reference numerals for clarity.
Die Fig. zeigt eine Tür für ein Haushalts-Wärmebehandlungsgerät in Form einer Backofentür 1 1 für einen Backofen 12. Dabei ist die Backofentür 1 1 in einer Ansicht von schräg vorne mit einem versetzt gezeigten linksseitigen Abschnitt 14 eines Rahmens 13 gezeigt. Die Backofentür 1 1 verschließt in der gezeigten aufrechten Stellung einen gestrichelt angedeuteten Wärmebehandlungsraum in Form eines Ofenraums O. Die Backofentür 1 1 ist in eine horizontale Öffnungsstellung verschwenkbar (und zurück) und weist dazu ein Scharnier 21 auf. Der Ofenraum O und die Backofentür 1 1 stellen Teile des Backofens 12 dar. The Fig. Shows a door for a household heat treatment device in the form of a oven door 1 1 for an oven 12. In this case, the oven door 1 1 is shown in a view obliquely from the front with a left-sided portion 14 of a frame 13 shown offset. The oven door 1 1 closes in the illustrated upright position indicated by dashed lines heat treatment space in the form of a furnace chamber O. The oven door 1 1 is in a horizontal open position pivoted (and back) and has to Hinge 21 on. The oven space O and the oven door 1 1 represent parts of the oven 12.
Der Rahmen 13 ist seitlich umlaufend ausgestaltet und frontseitig (dem Ofenraum O ab- gewandt) mittels einer Frontabdeckung in Form einer Frontglasscheibe 15 abgedeckt. Innenseitig (dem Ofenraum O zugewandt) ist der Rahmen mittels einer Innenabdeckung in Form einer Innenglasscheibe 16 abgedeckt. Der Rahmen 13, die Frontglasscheibe 15 und die Innenglasscheibe 16 umschließen einen unbelüfteten Hohlraum 17 dicht. Innerhalb des Hohlraums 17 befinden sich zwei aufeinander liegende, plattenförmige Aerogel- Scheiben 18, 19 einer jeweiligen Dicke zwischen ca. 12 mm und 16 mm. Die innenliegende Aerogel-Scheibe 18 ist von der Innenglasscheibe 16 durch einen Spalt d von mehr als 0, 1 mm, aber nicht mehr 1 mm getrennt. Die außenliegende Aerogel-Scheibe 19 ist gegenüber der Frontglasscheibe 15 durch einen Spalt getrennt ist. Da die Aerogel-Scheiben 18, 19 lichtdurchlässig und blickdurchlässig sind, wird ein großes Blickfeld durch die Backofentür 1 1 in den Ofenraum O ermöglicht. The frame 13 is laterally configured circumferentially and covered on the front side (facing away from the oven space O) by means of a front cover in the form of a front glass pane 15. On the inside (facing the furnace chamber O), the frame is covered by means of an inner cover in the form of an inner glass pane 16. The frame 13, the front glass pane 15 and the inner glass pane 16 enclose an unvented cavity 17 tightly. Within the cavity 17 are two superimposed, plate-shaped airgel discs 18, 19 of a respective thickness between about 12 mm and 16 mm. The inner airgel disc 18 is separated from the inner glass plate 16 by a gap d of more than 0, 1 mm, but not more than 1 mm. The outer airgel disc 19 is opposite the front glass pane 15 is separated by a gap. Since the airgel discs 18, 19 are translucent and translucent, a large field of view through the oven door 1 1 is made possible in the oven O space.
Um einen Druckausgleich des Hohlraums 17 mit einer Umgebung U der Backofentür 1 1 zu ermöglichen, weist die Backofentür 1 1 ein entsprechendes semipermeables Druckausgleichselement 20 auf. Das Druckausgleichselement 20 ist hier in einem unteren Bereich des linksseitigen Abschnitts 14 des Rahmens 13 angeordnet und damit in einem Kaltbereich der Backofentür 1 1. Das Druckausgleichselement 20 umfasst mindestens eine Membran. Das Druckausgleichselement 20 ist luftdurchlässig und dampfdurchlässig, aber flüssigkeitsundurchlässig. Zum Schutz vor einer mechanischen Beschädigung ist das Druckausgleichselement 20 von einer durchlässigen Schutzabdeckung 22, z.B. einem Gitter, abgedeckt. In order to allow pressure equalization of the cavity 17 with an environment U of the oven door 1 1, the oven door 1 1 has a corresponding semi-permeable pressure compensation element 20. The pressure compensation element 20 is arranged here in a lower region of the left-side portion 14 of the frame 13 and thus in a cold region of the oven door 1. 1. The pressure compensation element 20 comprises at least one membrane. The pressure compensation element 20 is permeable to air and permeable to vapor, but liquid impermeable. For protection against mechanical damage, the pressure compensation element 20 is surrounded by a permeable protective cover 22, e.g. a grid, covered.
Bei einem Betrieb des Backofens 12 erwärmt sich der Ofenraum O, wodurch wiederum der Hohlraum 17 erwärmt wird. Das sich in dem Hohlraum 17 bei einer Erwärmung expandierende Gas und ggf. dampfförmig vorliegende Feuchtigkeit kann aus dem Druck- ausgleichselement 20 austreten, so dass eine druckbedingte mechanische Belastung der Backofentür 1 1 verhindert werden kann. During operation of the oven 12, the oven space O is heated, which in turn heats the cavity 17. The expanding in the cavity 17 during heating gas and possibly moisture present in moisture can escape from the pressure compensation element 20, so that a pressure-induced mechanical stress on the oven door 1 1 can be prevented.
Mittels der Aerogel-Scheiben 18, 19 kann eine stärkere Erwärmung der Frontglasscheibe 15 auch der nicht belüfteten Backofentür 1 1 verhindert werden, da die Aerogel-Scheiben 18, 19 hochgradig wärmedämmend sind. Aufgrund einer Erwärmung der Aerogel- Scheiben 18, 19 kann ggf. in ihnen gehaltene Feuchtigkeit entfernt werden. By means of the airgel discs 18, 19, a stronger heating of the front glass pane 15 and the non-ventilated oven door 1 1 can be prevented, since the airgel discs 18, 19 are highly thermally insulating. Due to heating of the airgel disks 18, 19, it is possible to remove any moisture held in them.
Bei einem folgenden Abkühlen des Ofenraums O und damit auch des Hohlraums 17 strömt Luft aus der Umgebung U durch das Druckausgleichselement 20 in den Hohlraum 17. Jedoch werden dabei Staub und Flüssigkeiten (Öltröpfchen, Wassertröpfchen usw.) abgehalten. In a subsequent cooling of the furnace chamber O and thus also of the cavity 17 air flows from the environment U through the pressure compensation element 20 in the cavity 17. However, while dust and liquids (oil droplets, water droplets, etc.) are held.
Selbstverständlich ist die vorliegende Erfindung nicht auf das gezeigte Ausführungsbei- spiel beschränkt. Of course, the present invention is not limited to the illustrated embodiment.
Ganz allgemein kann z.B. die Frontabdeckung und/oder die Innenabdeckung zumindest mit teilweise mit dem Rahmen integriert sein. In general, for example, the front cover and / or the inner cover may at least partially be integrated with the frame.
Bezuqszeichenliste LIST OF REFERENCES
1 1 Backofentür 1 1 oven door
12 Backofen  12 oven
13 Rahmen  13 frames
14 linksseitiger Abschnitt  14 left-sided section
15 Frontglasscheibe  15 front glass pane
16 Innenglasscheibe  16 inner glass pane
17 unbelüfteter Hohlraum  17 unventilated cavity
18 plattenförmige Aerogel-Scheibe  18 plate-shaped airgel disc
19 plattenförmige Aerogel-Scheibe  19 plate-shaped airgel disc
20 Druckausgleichselement  20 pressure compensation element
21 Scharnier  21 hinge
22 Schutzabdeckung  22 protective cover
0 Ofen räum  0 oven room
U Umgebung  U environment

Claims

Patentansprüche claims
1. Tür (1 1 ) für ein Haushalts-Wärmebehandlungsgerät (12), insbesondere Garraumtür, mindestens aufweisend einen seitlich umlaufenden Rahmen (13), welcher frontseitig mittels einer zumindest bereichsweise blickdurchlässigen Frontabdeckung (15) abgedeckt ist und innenseitig mittels einer zumindest bereichsweise blickdurchlässigen Innenabdeckung (16) abgedeckt ist, wobei der Rahmen (13), die Frontabdeckung (15) und die Innenabdeckung (16) einen unbelüfteten Hohlraum (17) umschließen, 1. door (1 1) for a household heat treatment device (12), in particular cooking chamber, at least comprising a laterally encircling frame (13), which is front covered by an at least partially opaque front cover (15) and the inside by means of at least partially opaque inner cover (16), wherein the frame (13), the front cover (15) and the inner cover (16) enclose an unvented cavity (17),
dadurch gekennzeichnet, dass  characterized in that
der Hohlraum (17) zumindest teilweise mit lichtdurchlässigem Aerogel (18, 19) gefüllt ist und  the cavity (17) is at least partially filled with translucent airgel (18, 19) and
die Tür (1 1 ) mindestens ein semipermeables Druckausgleichselement (20) zum Druckausgleich zwischen dem Hohlraum (17) und einer Umgebung (U) aufweist.  the door (1 1) has at least one semipermeable pressure compensation element (20) for pressure equalization between the cavity (17) and an environment (U).
2. Tür (1 1 ) nach Anspruch 1 , dadurch gekennzeichnet, dass das mindestens eine semipermeable Druckausgleichselement (20) mindestens eine Membran ist. 2. Door (1 1) according to claim 1, characterized in that the at least one semipermeable pressure compensation element (20) is at least one membrane.
3. Tür nach Anspruch 1 , dadurch gekennzeichnet, dass das mindestens eine semipermeable Druckausgleichselement mindestens eine Kombination aus einem Ventil und einer Filtereinheit aufweist. 3. Door according to claim 1, characterized in that the at least one semipermeable pressure compensation element has at least one combination of a valve and a filter unit.
4. Tür nach Anspruch 3, dadurch gekennzeichnet, dass das mindestens eine semipermeable Druckausgleichselement ein nach innen öffnendes Ventil aufweist, das mit einer Filtereinheit zusammenwirkt, welche Trocknungsmittel als Filtermaterial aufweist, und ferner ein nach außen öffnendes Ventil aufweist. 4. Door according to claim 3, characterized in that the at least one semipermeable pressure compensation element has an inwardly opening valve, which cooperates with a filter unit having desiccant as filter material, and further comprising an outwardly opening valve.
5. Tür (1 1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das mindestens eine semipermeable Druckausgleichselement (20) luftdurchlässig und flüssigkeitsundurchlässig ist. 5. door (1 1) according to any one of the preceding claims, characterized in that the at least one semipermeable pressure compensation element (20) is permeable to air and liquid.
6. Tür (1 1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das mindestens eine semipermeable Druckausgleichselement (20) dampfdurchlässig ist. 6. door (1 1) according to any one of the preceding claims, characterized in that the at least one semipermeable pressure compensation element (20) is vapor-permeable.
7. Tür (1 1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das mindestens eine semipermeable Druckausgleichselement (20) in einem Kaltbereich (13, 14) der Tür (1 1 ) angeordnet ist. 7. door (1 1) according to one of the preceding claims, characterized in that the at least one semipermeable pressure compensation element (20) in a cold region (13, 14) of the door (1 1) is arranged.
8. Tür (1 1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das mindestens eine semipermeable Druckausgleichselement (20) in dem Rahmen (13) angeordnet ist. 8. door (1 1) according to one of the preceding claims, characterized in that the at least one semipermeable pressure compensation element (20) in the frame (13) is arranged.
9. Tür (1 1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das mindestens eine semipermeable Druckausgleichselement (20) von einer durchlässigen Schutzabdeckung (22) abgedeckt ist. 9. door (1 1) according to any one of the preceding claims, characterized in that the at least one semipermeable pressure compensation element (20) by a permeable protective cover (22) is covered.
10. Tür (1 1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Frontabdeckung eine Frontglasscheibe (15) und die Innenabdeckung eine Innenglasscheibe (16) ist. 10. door (1 1) according to any one of the preceding claims, characterized in that the front cover is a front glass pane (15) and the inner cover is an inner glass pane (16).
1 1. Tür (1 1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Aerogel in Form mindestens einer Aerogel-Scheibe (18, 19) vorliegt. 1 1. Door (1 1) according to one of the preceding claims, characterized in that the airgel in the form of at least one airgel disc (18, 19) is present.
12. Haushalts-Wärmebehandlungsgerät (12), insbesondere Gargerät, mit mindestens einem durch eine Tür verschließbaren Wärmebehandlungsraum (O), dadurch gekennzeichnet, dass die Tür eine Tür (1 1 ) nach einem der vorhergehenden Ansprüche ist. 12. Domestic heat treatment device (12), in particular cooking appliance, with at least one closable by a door heat treatment space (O), characterized in that the door is a door (1 1) according to one of the preceding claims.
EP13710990.6A 2012-03-21 2013-03-12 Door having an unventilated cavity for a domestic heat treatment device Active EP2828582B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012204544A DE102012204544A1 (en) 2012-03-21 2012-03-21 Door with unvented cavity for a household heat treatment device
PCT/EP2013/054935 WO2013139638A1 (en) 2012-03-21 2013-03-12 Door having an unventilated cavity for a domestic thermal treatment device

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EP2828582A1 true EP2828582A1 (en) 2015-01-28
EP2828582B1 EP2828582B1 (en) 2017-08-09

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EP (1) EP2828582B1 (en)
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WO (1) WO2013139638A1 (en)

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DE4028743A1 (en) * 1990-09-11 1992-03-12 Miele & Cie OVEN WITH A MUFFLE
DE4240096A1 (en) * 1992-11-28 1994-06-01 Juno Groskuechen Gmbh Pressure equaliser esp. for gas space between glass plates - counteracts temp. fluctuations by particle filter incorporated into package guaranteeing communication with atmos.
DE4333033C1 (en) * 1993-09-29 1995-05-24 Schott Glas Temperature-insulating viewing window or door for a device with an internal temperature that deviates from its ambient temperature
DE20022402U1 (en) * 2000-03-15 2001-08-02 Schott Glas, 55122 Mainz Viewing window for a hot room isolated from the surroundings
DE20009546U1 (en) * 2000-05-27 2000-08-10 Bayer Isolierglas- und Maschinentechnik GmbH, 79215 Elzach Closure for devices with high internal temperature
US7635411B2 (en) * 2004-12-15 2009-12-22 Cabot Corporation Aerogel containing blanket
EP2436750A3 (en) * 2006-09-01 2014-08-20 Pleotint, L.L.C. Ligand exchange thermochromic, (LETC), systems
DE102007028911A1 (en) * 2007-06-22 2009-01-02 Solan Gmbh Pressure equalization device for a gas volume containing insulating glass units

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WO2013139638A1 (en) 2013-09-26
EP2828582B1 (en) 2017-08-09

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