US20090032008A1 - Pyrolysis Appliance - Google Patents

Pyrolysis Appliance Download PDF

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Publication number
US20090032008A1
US20090032008A1 US12/087,970 US8797007A US2009032008A1 US 20090032008 A1 US20090032008 A1 US 20090032008A1 US 8797007 A US8797007 A US 8797007A US 2009032008 A1 US2009032008 A1 US 2009032008A1
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US
United States
Prior art keywords
cooking
base door
door
housing
drive motor
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.)
Abandoned
Application number
US12/087,970
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English (en)
Inventor
Ingo Bally
Kerstin Feldmann
Wolfgang Fuchs
Martin Keller
Edmund Kuttalek
Maximilian Neuhauser
Klemens Roch
Wolfgang Schnell
Guenter Zschau
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
Assigned to BSH BOSCH UND SIEMENS HAUSGERATE GMBH reassignment BSH BOSCH UND SIEMENS HAUSGERATE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ZSCHAU, GUNTER, KUTTALEK, EDMUND, KELLER, MARTIN, NEUHAUSER, MAXIMILIAN, SCHNELL, WOLFGANG, BALLY, INGO, FELDMANN, KERSTIN, ROCH, KLEMENS, FUCHS, WOLFGANG
Publication of US20090032008A1 publication Critical patent/US20090032008A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/02—Doors specially adapted for stoves or ranges
    • F24C15/022—Latches
    • 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
    • F24C14/00—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning
    • F24C14/02—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning pyrolytic type
    • 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
    • F24C15/027—Doors specially adapted for stoves or ranges located at bottom side of housing

Definitions

  • the present invention relates to a pyrolysis device, in particular a cooking appliance, specifically a high-level built-in cooking appliance, having at least one muffle that delimits a cooking space and has a muffle opening, and having a door for closing the muffle opening and a drive motor for moving the door.
  • a pyrolysis device in particular a cooking appliance, specifically a high-level built-in cooking appliance, having at least one muffle that delimits a cooking space and has a muffle opening, and having a door for closing the muffle opening and a drive motor for moving the door.
  • Lock hooks have been known hitherto as a means for locking pyrolysis devices—which is to say domestic appliances having a pyrolytic function—that have a motorized door. Said lock hooks disadvantageously occupy space.
  • the object of the present invention is to provide a pyrolysis device offering a possibility of locking the door in a reliable and compact manner.
  • the pyrolysis device in particular a high-level built-in cooking device though also a cooking appliance having an oven carriage that can be moved in a motorized manner, is for that purpose fitted with a drive motor having a self-locking gear.
  • a mechanical pull on the door in its closed condition counter to the motor can by means of the self-locking gear be made sufficiently difficult to exert for the door to be reliably prevented from opening.
  • the self-locking gear is advantageously a worm gear.
  • FIG. 1 is a perspective view of a high-level built-in cooking appliance mounted on a wall with its base door lowered;
  • FIG. 2 is a perspective view of the high-level built-in cooking appliance with its base door locked shut;
  • FIG. 3 is a perspective view of a housing of the high-level built-in cooking appliance without the base door;
  • FIG. 4 is a schematic sectional side view along the line I-I shown in FIG. 1 showing the high-level built-in cooking appliance mounted on the wall with its base door lowered;
  • FIG. 5 is a front view of a further embodiment variant of a high-level built-in cooking appliance
  • FIG. 6 is a front view of the embodiment variant shown in FIG. 5 in the closed condition with a more detailed description of the position of individual housing elements;
  • FIG. 7 is a sectional top view of the embodiment variant shown in FIG. 6 ;
  • FIG. 8 shows parts of the drive device for a more detailed description
  • FIG. 9 is a side view, analogous to FIG. 4 , of a further embodiment variant of the high-level built-in cooking appliance.
  • FIG. 1 shows a high-level built-in cooking appliance having a housing 1 .
  • the rear of the housing 1 is mounted on a wall 2 in the manner of a hanging cabinet.
  • a cooking space 3 that can be checked via a viewing window 4 provided on the front side in the housing 1 .
  • the cooking space 3 is delimited by a muffle 5 that is provided with a thermally insulating casing (not shown), and that the muffle 5 has a muffle opening 6 on the base side.
  • the muffle opening 6 can be locked shut by means of a base door 7 .
  • the base door 7 is shown lowered in FIG. 1 , with its being in contact at its underside with a work surface 8 of an item of kitchen equipment.
  • the base door 7 To lock the cooking space 3 shut, the base door 7 must be moved to the position shown in FIG. 2 , what is termed the “zero position”.
  • the drive device 9 , 10 has a drive motor 9 that is shown in FIGS. 1 , 2 , and 4 by dashed lines and is located between the muffle 5 and an external wall of the housing 1 .
  • the drive motor 9 is located in the region of the rear of the housing 1 and, as shown in FIG. 1 or 4 , is functionally linked to a pair of lifting elements 10 , for example telescopic rails, that are joined to the base door 7 .
  • Each lifting element 10 is according to the schematic side view shown in FIG. 4 therein embodied as an L-shaped support whose vertical limb extends from the drive motor 9 on the housing side.
  • the support is alternatively secured via a telescopic rail to the housing 1 .
  • the drive motor 9 can be actuated with the aid of a control panel 12 and control circuit 13 located according to FIGS. 1 and 2 on the front side on the base door 7 .
  • the control circuit 13 is located behind the control panel 12 inside the base door 7 .
  • the control circuit 13 which consists here of a plurality of spatially and functionally separate printed-circuit boards that communicate via a communication bus constitutes a central control unit for operating the appliance and controls and/or regulates, for example, heating, moving of the base door 3 , implementing user inputs, illuminating, pinch protection, clocking of the heating elements 16 , 17 , 18 , 22 , and much else besides.
  • a top side of the base door 7 has a cooking field 15 .
  • the heating elements 16 , 17 are in FIG. 1 two spaced-apart, differently sized cooking-point heating elements while the heating element 18 is an area heating element that is provided between the two cooking-point heating elements 16 , 17 and almost encloses the cooking-point heating elements 16 , 17 .
  • the cooking-point heating elements 16 , 17 define associated cooking zones or units; the cooking-point heating elements 16 , 17 along with the area heating element 18 define a bottom-heating zone.
  • the zones can be indicated on the surface by means of a suitable decorative finish.
  • the heating elements 16 , 17 , 18 can each be controlled via the control circuit 13 .
  • the heating elements 16 , 17 , 18 are in the exemplary embodiment shown embodied as radiant-heat elements covered by a glass ceramic plate 19 .
  • the glass ceramic plate 11 has roughly the same dimensions as the top side of the base door 7 .
  • the glass ceramic plate 19 is furthermore provided with mounting openings (not shown) through which protrude base parts for securing fixing parts 20 for supports 21 for food being cooked, as also shown in FIG. 4 .
  • mounting openings not shown
  • protrude base parts for securing fixing parts 20 for supports 21 for food being cooked as also shown in FIG. 4 .
  • the high-level built-in cooking appliance can be switched to a cooking-point or bottom-heating mode that will be explained below.
  • the cooking-point heating elements 16 , 17 can in the cooking-point mode be individually controlled by means of control elements 11 , which are provided in the control panel 12 , via the control circuit 13 , while the area heating element 18 remains non-operating.
  • the cooking-point mode can be used with the base door 7 lowered, as shown in FIG. 1 . It can, though, also be operated in an energy-saving manner with the cooking space 3 locked shut and the base door 7 raised.
  • the heating elements 16 , 17 , 18 have different rated outputs.
  • the heating elements 16 , 17 , 18 are therefore preferably not switched by the control circuit 13 to continuous operation; the power supply to the heating elements 16 , 17 , 18 is instead clocked.
  • the differently rated heat outputs of the heating elements 16 , 17 , 18 are therein individually reduced such that the heating elements 16 , 17 , 18 will provide a heat output that is evenly distributed over the surface of the cooking field 15 .
  • FIG. 3 schematically shows the position of a circulating-air can 23 having a circulating-air motor and associated ring heater, for example for producing hot circulating air during a hot-air operating mode.
  • the circulating-air can 23 that is open toward the cooking space 3 is typically separated therefrom by a baffle plate (not shown).
  • a top-heating body 22 that can be embodied as comprising one or more circuits, for example an inner and an outer circuit.
  • the various operating modes such as, for example, also the top-heating, hot-air, or high-speed heating mode can be set by means of the control circuit 13 by appropriately activating and setting the heat output of the heating elements 16 , 17 , 18 , 22 , where applicable with the fan 23 also being activated.
  • the heat output can be set by means of suitable clocking.
  • the cooking field 15 can furthermore also be implemented differently, for example having or not having a fryer zone, as a pure—single-circuit or multi-circuit—warming zone without any cooking units, and so forth.
  • the housing 1 has a seal 24 toward the base door 7 .
  • the control panel 12 is located chiefly on the front side of the base door 7 . It can alternatively conceivably also be located elsewhere, for example on the front side of the housing 1 , distributed among different partial fields, and/or partially on side surfaces of the cooking appliance. Other arrangements are possible.
  • the control elements 11 are not subject to any design constraints and can include, for example, control knobs, toggle switches, pushbuttons, and membrane switches that include the display elements 14 , for example LED, LCD, and/or touchscreen displays.
  • FIG. 5 is a schematic showing a high-level built-in cooking appliance from the front, though not to scale, with the base door 7 open making contact with the work surface 8 .
  • the closed condition is drawn in dashed lines.
  • Each movement-control panel 25 has two pushbuttons, namely a top CLOSE pushbutton 25 a for a base door 7 moving upward in the closing direction and a bottom OPEN pushbutton 25 b for a base door 7 moving downward in the opening direction.
  • the base door 7 will move upward, if possible, only through continuously simultaneously pressing the CLOSE buttons 25 a on both movement-control panels 25 ; the base door 7 will also move downward, if possible, only through continuously simultaneously pressing the OPEN buttons 25 b on both movement-control panels 25 (manual operation).
  • Movement-control panels 26 are in an alternative embodiment variant attached to opposite external sides of the housing 1 with corresponding CLOSE buttons 26 a and OPEN buttons 26 b , as drawn with dotted lines.
  • the control circuit 13 which is drawn in dot-and-dash lines and located inside the base door 7 behind the control panel 12 switches the drive motor 9 such that the base door 7 will start moving gently, meaning not abruptly through simple starting of the drive motor 9 but via a defined ramp.
  • the control circuit 13 includes in that exemplary embodiment a memory unit 27 for storing at least one target position or moving position P 0 , P 1 , P 2 , PZ of the base door 7 by means preferably of volatile memory modules, for example DRAMs.
  • a target position P 0 , P 1 , P 2 , PZ has been stored, the base door can after one of the buttons 25 a , 25 b or 26 a , 26 b on respectively the movement-control panels 25 or 26 has been actuated continue moving automatically in the direction that has been set until the next target position has been reached or one of the buttons 25 a , 25 b or, as the case may be, 26 a , 26 b is actuated again (automatic operation).
  • the bottommost target position PZ corresponds in that exemplary embodiment to the maximum opening
  • the (zero) position P 0 corresponds to the closed condition
  • P 1 and P 2 are freely settable intermediate positions.
  • the final target position for a direction it is necessary, moreover, to continue in manual operation if that is possible (meaning if the final end positions do not correspond to a maximum open or the closed end condition).
  • no target position has been stored for a direction—which would be the case, for example, for an upward movement into the closed position if only PZ has been stored but not P 0 , P 1 , P 2 —it will then be necessary analogously to proceed in that direction in manual operation.
  • Automatic operation will not be possible if no target position has been stored, for example in the case of a new installation or following disconnection from the ac power supply.
  • Pinch protection will preferably have been activated if the base door 7 is moved in automatic operation.
  • Automatic and manual operation are not mutually exclusive: Through continuous actuating of the movement-control panel(s) 25 , 26 the base door 7 will also move in manual operation if a target position can be approached in the relevant direction. For example a maximum actuating time, 0.4 seconds for instance, for the movement-control panels 25 or 26 or, as the case may be, associated buttons 25 a , 25 b or 26 a , 26 b can therein be specified for activating automatic operation.
  • a target position P 0 , P 1 , P 2 , PZ can be any position of the base door 7 between and including the zero position P 0 and maximum open position PZ.
  • the maximum stored open position PZ does not, though, necessarily have to be the position in which contact is made with the work surface 8 .
  • the target position P 0 , P 1 , P 2 , PZ can be stored with the base door 7 at the desired target position P 0 , P 1 , P 2 , PZ by, for example, actuating a confirmation button 28 in the control panel 12 for a number of seconds (for example two seconds). Any existing optical and/or acoustic signal generators that feed out corresponding signals after a target position has been stored have for greater clarity been omitted from the drawing.
  • the desired target position P 0 , P 1 , P 2 , PZ requiring to be set is approached by, for example, —in this exemplary embodiment—two-handedly operating the movement-control panels 25 or 26 and manually moving to said position.
  • a plurality of target positions P 0 , P 1 , P 2 , PZ can be capable of being stored in the memory unit 27 .
  • a plurality of target positions P 0 , P 1 , P 2 , PZ can be stored, they can be approached by consecutively actuating the corresponding movement buttons 25 a , 25 b or, as the case may be, 26 a , 26 b .
  • the target position(s) can advantageously be deleted and/or overwritten.
  • only one target position can be stored in the open condition while the zero position P 0 is detected automatically and can be approached automatically.
  • the zero position P 0 must alternatively also be stored to able to be approached automatically.
  • the drive motor 9 shown in FIG. 1 has at least one sensor unit 31 , 32 located, where applicable in front of or behind a gear unit, on a motor shaft 30 in order to measure a travel path or a position and/or speed of the base door 7 .
  • the sensor unit can include, for example, one or more induction, Hall, optoelectric, OFW—and so forth—sensors.
  • Two Hall (sub-)elements 31 have for simple travel and speed measuring here been attached displaced through 180°—thus situated mutually opposite—to the motor shaft 30 , and a Hall measuring sensor 32 has at a distance been stationarily attached in that region of the motor shaft.
  • a measuring or sensor signal that is in good approximation digital will be generated if a Hall element 31 then passes by the measuring sensor 32 when the motor shaft 30 turns. So two signals will be fed out during a rotation of the motor shaft 30 if there are (though not necessarily) two Hall elements 31 .
  • the speed vL of the base door 7 can be determined by evaluating said signals on a time basis, in terms of their difference for instance, by way, for example, of comparison tables or a real-time conversion in the control circuit 13 .
  • a travel path or position of the base door 7 can be determined by adding or subtracting the measurement signals.
  • a speed controller can control the speed via, for example, a PWM-controlled power semiconductor.
  • the path measurement is recalibrated automatically through initializing in the zero position P 0 of the base door 7 each time a position is being approached so that, for example, a faulty sensor-signal output or reception will not propagate.
  • the drive motor 9 can be operated by actuating both movement-control panels 25 or, as the case may be, 26 also with the main switch 29 switched off.
  • a single switch per movement-control panel is also possible, for example a toggle switch that has a neutral position and switches only under pressure.
  • Other forms are also possible.
  • the manner in which the control elements 28 , 29 of the control panel 12 are arranged is not limited either.
  • control circuit 13 is arranged and disposed is therein flexible and not restricted so it can also include a plurality of boards, for example a display board, a control board, and a lifting board that are spatially separate.
  • a 4-mm opening extent can be detected by end switches 33 which on actuation deactivate pinch protection.
  • the high-level built-in cooking appliance can also be embodied without a memory unit 27 , with automatic operation then not being possible. That can be expedient for enhanced operating safety, for example as a protection against pinching.
  • FIG. 6 is a schematic front view (not to scale) of the position of individual elements of the housing 1 in the closed condition in which the base door 7 closes against the muffle 5 and thereby also forms an optical closure of the housing 1 .
  • the housing 1 consists of an (inner) housing body 34 (shown in dashed lines) and a housing cover or panel 35 that surrounds the housing body 34 at least at the front and sides.
  • the space 36 between the housing body 34 and housing cover 35 is embodied in such a way that cooling air can at least partially flow through.
  • bottom ventilation openings 37 for example ventilation slits, positioned lower than the top surface 38 of the housing body 34 preferably in a region close to the muffle opening or lifting base 7 .
  • the ventilation openings 37 are here provided on the underside of the housing cover 35 , but they can also be provided laterally, for example.
  • a current of cooling air can thereby be set up, typically from bottom to top, through the space 36 , which current is then ducted away through the ceiling.
  • the muffle 5 (shown in dotted lines) is emplaced in the housing body 34 , with the associated space 40 —except for the front side—being lined with insulating material.
  • the muffle 5 is embodied shaped like an inverted U.
  • a plurality of viewing windows 4 Provided to afford a view into the cooking space 3 are a plurality of viewing windows 4 , namely a first (inner) viewing window 41 (indicated by dot-and-dash lines) which directly covers the muffle 5 and hence constitutes at least partially a wall of the muffle 5 , a second (middle) viewing window 42 (indicated likewise by dot-and-dash lines) held in position by the housing body 34 , and a third (outer) viewing window 43 in the housing cover 35 .
  • venting slits 37 , 39 can also be provided arranged otherwise and in another form.
  • FIG. 7 is a detailed view (not to scale) of the inside of the housing with various elements located there.
  • the spaces 36 between the housing body 34 and housing cover 35 namely the lateral spaces 44 , the front space 45 , and the rear space 46 , can clearly be seen from that view.
  • the front space 45 is owing to the three viewing windows 41 , 42 , 43 subdivided vertically into a first front space 45 a between the middle viewing window 42 and outer viewing window 43 and a second front space 45 b between the middle viewing window 42 and inner viewing window 41 .
  • the spaces do not have to be empty, of course, but can contain various elements such as, for example, lifting elements 10 , support means, passages, insulating means, air-ducting elements such as air baffles, screws, and struts etc., with not every space 36 having necessarily to allow a significant current of air.
  • Attached to the housing body 34 are in particular: Electric or electronic modules 47 such as the control circuit 13 , a drive device 48 , and a ventilating device 49 .
  • the ventilating device 49 includes at least one fan which in this embodiment variant is precisely one fan that sucks in air from two directions by means of two suction openings.
  • a two-part fan in the case of which the discharged air is fed out additionally at least substantially in unmixed form.
  • the double radial fan 50 shown here that has two opposite suction openings and feeds out sucked-in air laterally is especially suitable. The two sucked-in air streams are therein fed out substantially laterally mutually parallel.
  • a suction opening of the double radial fan 50 is in the structural variant shown here linked to a suction channel 51 that at least partially covers the front space 45 from above and during operation thereby sucks in cooling air from below from the bottom venting openings 37 through the front space 45 .
  • the front space 45 which owing to the viewing windows 4 , 41 - 43 provides thermal insulation that is rather on the low side is thereby cooled for better user safety.
  • the other (rear) suction opening of the double radial fan 50 is open. Cooling air is consequently sucked in particularly from the lateral spaces 44 and rear space 46 and flows over the top surface 38 to the fan 50 . The components located on the top surface 38 will consequently also be cooled through air flowing around or through them. That is advantageous particularly for the electronic modules 47 .
  • the air discharged from the fan 50 passes through an air-discharge channel 52 to a top air outlet 53 which blows out the air through the venting opening(s) 39 shown in FIG. 6 .
  • the drive device 48 includes a motor 9 that is secured centrally on the surface 38 of the housing body 34 and on top of which is a guide housing 54 .
  • Two guide channels (not shown). pass through the guide housing 54 .
  • the guide housing 54 has a circular recess for inserting a pinion 55 of the motor 9 .
  • the guide channels pass laterally open by the recess so that any ropes, cables etc. in the guide channels will be brought into engagement with the pinion 55 .
  • Attached to the guide channels' outer openings, thus in this case four openings, are guide tubes 56 which together with the guide channels form continuous cable channels.
  • the guide tubes 56 extend in that embodiment variant from the guide housing 54 to the edge of the top surface 38 into a region above the lifting elements 10 then over the edge downward into the lifting elements 10 .
  • each of the two cable channels Extending through each of the two cable channels as a pitch cable is a drive cable (not shown).
  • the pitch cable has a flexible metal core and is wire-covered. One end of each pitch cable is permanently joined to the base door 7 ; the other is free. Because both pitch cables engage on opposite sides with the pinion 55 , they will be linearly displaced in opposite directions through turning of the pinion 55 .
  • the pitch cable drive can be obtained from, for instance, the company WEBASTO, Germany.
  • the guide tubes 56 are elastically deformable, being shaped from, for example, die-cast aluminum.
  • At least one load-bearing guide tube 56 (which is to say a guide tube 56 that ducts a section of a pitch cable which is permanently joined—directly or indirectly—to the base door 7 ; a load is thereby applied to that section of the pitch cable) is supported on a bearing surface 57 , with the bearing force depending on the size of the load on the pitch cable.
  • a bearing surface 57 of such type is in that embodiment variant provided for each load-bearing guide tube 56 .
  • the bearing surfaces 57 are located substantially on the edge of the top surface 38 of the housing body 34 so that the length of the guide tube 56 deflectable under load—its “arm”—becomes large.
  • the load dependency of the substantially vertical force exerted by the respective guide tube 56 on the bearing surface 57 will as a result be embodied as being as great as possible.
  • the bearing force is dependent on, for example, the extent to which the base door 7 is loaded or on a settling onto a base or object. Overload-detection for the base door 7 or pinch protection, for example, can be realized by measuring the bearing force.
  • the length of the guide tubes 56 is a discretionary design-related matter and can be relatively short or can extend as far as where the pitch cable is secured to the base door 7 (in the closed condition).
  • guide tubes 56 for allowing the pitch cables' bearing surface to be employed for load measuring is for reasons relating to gliding and abrasion advantageous it is not essential. It is possible also to duct the pitch cables—or cables or ropes in general—freely via suitably positioned bearing surfaces (for example ones extending beyond the surface edge).
  • the bearing surfaces will then be favorably embodied appropriately, being made from, for example, a suitable hard material and/or one capable of gliding, having a treated or coated surface.
  • pitch cable drive essential, though advantageous owing to its simple structural design and installation as well as precise displacement.
  • Alternative drives include, for instance, such that drive a rope drum etc.
  • FIG. 8 is a top view of the guide housing 54 with the connected guide tubes 56 forming two separate guide channels, namely—in that representation—a top and a bottom guide channel.
  • Extending through each of the guide channels 54 , 56 is a pitch cable 58 typically around one meter in length.
  • the guide channels direct the pitch cables 58 to a recess in the guide housing 54 through which a toothed wheel or pinion 55 driven by the drive motor has been passed.
  • the teeth of the pinion 55 engage with the wound wire of the respective pitch cable 58 which from the viewpoint of the pinion 55 forms a kind of linear sequence of teeth.
  • the top pitch cable 58 is moved linearly from left to right through turning of the pinion 55 by means of the drive motor—in this case clockwise, shown by the unbroken arrows—and the bottom cable 58 is moved in equal measure from right to left, as indicated by the dashed arrows.
  • a transmission ratio in the 30:1 to 60:1 range has for the embodiment variant shown proved to be a good compromise between self-locking and speed of travel.
  • a transmission ratio in the 40:1 to 50:1 range, specifically of 45:1 is suitable. At a transmission ratio of 45:1 the base door could not be opened under a load exceeding 20 kg.
  • FIG. 9 is a side view, analogous to FIG. 4 , of a further embodiment variant of the high-level built-in cooking appliance with a more detailed description of the drive device shown in FIGS. 7 and 8 .
  • the drive motor 9 , the guide housing 54 , the ventilating device 49 , and the electronic modules 47 have for greater clarity been omitted from the drawing.
  • the other side of the cooking appliance is constructed analogously.
  • the elastically deformable guide tubes 56 can be seen that are at the top supported by the bearing surface 57 and then extend bent downward into the lifting elements 10 .
  • the pitch cables 58 exit from the free openings of the guide tubes 56 , namely a section—bearing a load on that side—of a pitch cable 58 (left) that is permanently joined via a securing element 59 to the bottom telescopic 20 rod 60 of the lifting element 10 and hence indirectly to the base door 7 .
  • the other (right-hand) pitch cable 58 has on that side a free end. On the other side of the cooking appliance the respectively other pitch cable 58 is secured or, as the case may be, free.
  • the pitch cables 58 will, as described above, be linearly displaced through actuating of the drive motor and raise or, as the case may be, lower the base door 7 .
  • Any excess pressure produced within the cooking space as a result of pyrolytic deflagration can be suitably released by, for example, briefly opening an opening, for instance a ventilator valve or suchlike. It is also basically possible when a pre-specified internal pressure is exceeded for the door of the pyrolysis device to briefly open through, for example, the brief overcoming of a closing force, for example an elastic force, by the internal pyrolytic pressure.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electric Stoves And Ranges (AREA)
US12/087,970 2006-01-31 2007-01-04 Pyrolysis Appliance Abandoned US20090032008A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006004376A DE102006004376A1 (de) 2006-01-31 2006-01-31 Pyrolysegerät
DE102006004376.6 2006-01-31
PCT/EP2007/050076 WO2007088083A1 (de) 2006-01-31 2007-01-04 Pyrolysegerät

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US20090032008A1 true US20090032008A1 (en) 2009-02-05

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US12/087,970 Abandoned US20090032008A1 (en) 2006-01-31 2007-01-04 Pyrolysis Appliance

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US (1) US20090032008A1 (de)
EP (1) EP1982120A1 (de)
DE (1) DE102006004376A1 (de)
WO (1) WO2007088083A1 (de)

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EP1982120A1 (de) 2008-10-22
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