Classifications

• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B1/00—Details of electric heating devices
  • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
  • H05B1/0227—Applications
  • H05B1/0252—Domestic applications
  • H05B1/0258—For cooking
  • H05B1/0261—For cooking of food
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
  • E05B47/02—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means
• • 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
  • F24C7/00—Stoves or ranges heated by electric energy
  • F24C7/08—Arrangement or mounting of control or safety devices
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
  • E05B2047/0048—Circuits, feeding, monitoring
  • E05B2047/0067—Monitoring
  • E05B2047/0068—Door closed

Definitions

• the present invention relates to an arrangement for avoiding the overheating of an electrically operated heating device and / or of the surrounding area.
• heaters When installing ovens or other heat-generating electrically operated appliances, such as steamer, grills, microwaves, etc., hereinafter referred to as heaters, in closable by closures lockers must be noted that the heaters with closed front element, such as a closed Door or flap must not be in heating mode. The closure element must therefore not be closed when these devices are in heating mode.
• the object of the present invention is to further develop an arrangement for avoiding the overheating of an electrically operated heating device and / or of the surrounding area in such a way that the heating devices can be safely and reliably operated in furniture elements.
• the arrangement comprises a control device, means for detecting the current strength of the power supply of the heating device or for detecting a correlated with the current parameter and a locking mechanism, by means of which the range of movement of a closure element, in particular a door or flap limited or the closure element blockable is, wherein the controller is in communication with the means for detecting the current or the parameter as well as with the locking mechanism and is designed such that it activates the locking mechanism, when the measured current exceeds a threshold value or in or outside of a certain range of values or the parameter value correlated with the current value exceeds or falls below a limit value or lies within or outside a certain value range.
• the means for detecting the current strength comprise a coil, by means of which an inductive current measurement takes place. It is thus possible to measure the current inductively by a coil applied externally to the connecting lead of the heating device.
• the control unit is designed such that it activates the locking mechanism in a first switching state and deactivates the locking mechanism in a second switching state, wherein the choice of switching states depends on the measured current or on the correlated with this parameter and wherein the current intensity or the parameter value correlated therewith, at which the / is switched from the first to the second switching state or vice versa, is fixed or adjustable.
• the current intensity for the change between the two switching states is predetermined or is also individually adaptable. This is particularly advantageous because not all heaters have the same power consumption. This depends, for example, on which or how many displays, programming means, timers, etc. are provided.
• the control unit is adaptable insofar as that the conditions for the switching between the two switching states are variably adjustable.
• the locking mechanism may comprise a magnet which is designed and arranged such that it blocks the closure element in the energized state or limits its range of motion. It is conceivable that, for example, in the state in which a comparatively high current is measured, a magnetic mechanism is energized, wherein the action carried out by the energization, for example, a pivot fitting in the closing movement the blocking element blocked or blocked from a minimum opening angle, which is not underschreitbar.
• the movement of the closure element is completely blocked or that the movement of the closure element is blocked above a certain opening angle of the closure element such that smaller angles than the specific opening angle can not be realized.
• the present invention further relates to a furniture element, in particular a kitchen furniture element, wherein the furniture element has an area which serves to accommodate a heating device or in which a heating device is received, and wherein the furniture element has a closure element, in particular a door or flap, means whose area is closable.
• the furniture element is designed with an arrangement according to one of claims 1 to 5. Accordingly, the closure element can be blocked or restricted to its range of motion if it is determined that the measured current strength exceeds a limit value or lies within or outside a certain value range or if the parameter correlated with the current value exceeds or falls below a limit value or in or outside a certain value range lies.
• the heating device is a steamer, a grill, a microwave oven, an oven, a stove or a coffee machine.
• the invention is not limited to the devices mentioned here, but includes all heat-generating devices.
• a temperature sensor is provided, which is arranged such that it measures the temperature preferably in said area of the furniture element or, for example, directly on the heating device or in another suitable place and that with the locking mechanism communicates directly or indirectly in such a way that the locking mechanism remains activated as long as the sensor detects a temperature value which exceeds a certain limit value or lies within a certain range.
• the temperature sensor may be part of the arrangement according to the invention or the furniture element according to the invention or be in communication with them. It is preferably in communication with the control unit of the arrangement according to the invention.
• closure element can not be closed as long as there is too high a temperature.
• the closure element can then not be closed when the heating operation is completed, but only when the temperature is below a limit.
• Said means may be part of the arrangement according to the invention or of the furniture element according to the invention or be in connection therewith. They are preferably connected to the control unit of the arrangement according to the invention or form part of it.
• the values of the temperature sensor, from which closing of the closure element is possible, or the length of said follow-up time can be fixed or adjustable.
• the invention relates to an arrangement for preventing the overheating of an electrically operated heating device and / or the surrounding area, wherein means are provided for monitoring.
• the means for monitoring detect via status queries both the position of a closure element and the power supply and / or current.
• the means In a first state in which the closure element, in particular a door or flap, is in the closed position, the means allow no or only a limited flow of current.
• a heating device e.g. an oven
• closed front e.g. short circuit in the oven
• the current in the first state is passed through a unit limiting the energy supply and / or current which triggers when the heating device is switched on.
• a power supply and / or current limiting unit may for example be a fuse.
• the energy supply and / or current limiting unit is a fuse that burns when you turn on the heater.
• the invention relates to an arrangement for preventing the overheating of an electrically operated heating device and / or the surrounding area according to any one of claims 8 to 11, which is carried out according to one of the characterizing parts of one of claims 1 to 7.
• Such a configuration is particularly advantageous because overall increases the error redundancy and the reliability is improved.
• the present embodiment relates to a furniture element, namely a cabinet which can be closed by a door element designed as a front element.
• a heating device in the form of a baking oven, which is to be ensured by means of the inventive arrangement that the oven is not in heating mode when the front element is closed or falls below a minimum opening angle.
• the oven has a timer that is to be powered regardless of whether the front panel is closed or not.
• the arrangement according to the invention has an outside of the connecting line of the oven applied coil, by means of which the current is measured, which flows to or from the oven.
• the coil is connected to a control unit to which the current current value is made available.
• the control unit has two switching states, wherein state 1 is set when measuring a small current value and state 2 when measuring a comparatively high current value.
• the front element is a locking mechanism in connection, which is designed such that the front element can not be pivoted at an active locking mechanism below a certain minimum opening angle. This means that the locking mechanism ensures that the front element is open at least in the minimum opening angle.
• the locking mechanism comprises a magnetic mechanism, which ensures in the energized state that the pivot fitting of the front element is blocked in the closing movement of the front element from a minimum opening angle.
• the front element is forcibly opened so far that the operation of the heater is reached. It is to be assumed that this minimum opening angle, which is at least necessary when operating the device, is sufficient to avoid the heat build-up behind the front element. Thus, it is sufficient that the locking of the Closing movement takes place from this minimum opening angle, which means that smaller angles than the minimum opening angle are prevented by the locking mechanism.
• the control unit (state 1) does not activate the locking mechanism, that is to say the front element can be opened and closed as desired.
• the locking mechanism is activated by means of the control unit (state 2), with the result that the front element is not movable to an opening angle which is smaller is considered the minimum opening angle.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Food Science & Technology (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Electric Stoves And Ranges (AREA)
• Control Of Resistance Heating (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=39777624

Family Applications (1)

Country Status (2)

Families Citing this family (2)

Citations (6)

• 2007
  • 2007-08-30 DE DE102007041135A patent/DE102007041135A1/de not_active Withdrawn
• 2008
  • 2008-03-31 EP EP08006397A patent/EP2025841A3/fr not_active Withdrawn

Patent Citations (6)

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