EP2950002A1 - Oven - Google Patents

Abstract

Oven (1) with a cooking chamber (2) for cooking and with a manually movable door (3). By means of the door (3) is a feed opening (12) of the cooking chamber (2) can be opened and closed. In this case, a motor auxiliary drive (4) is provided and adapted and adapted to support a manual opening of the door (3) at least temporarily.

Description

The present invention relates to an oven with at least one cooking chamber for the preparation of food and with at least one manually movable door.

Most of today's ovens have doors that have good insulation properties for environmental and economic reasons and therefore prevent unnecessary heat loss from the oven. There are, for example, doors with several successively arranged discs become known, which allow a viewing opening in the cooking chamber and at the same time a good thermal insulation. The doors therefore often have a significant weight, which the user must hold or lift when opening and closing.

In addition, the doors are often pressed against the cooking chamber opening in the closed state, in order to achieve a dense concern and to avoid the escape of heat. For this example, hinges are used, which press the door by means of a spring. When opening the door, therefore, the user must initially often pull accordingly strong to overcome the spring force.

It is therefore the object of the present invention to provide an oven, in which the user an improved opening and closing of the door is possible.

This object is achieved by an oven with the features of claim 1. Further embodiments will be apparent from the dependent claims and the embodiment.

The oven according to the invention comprises at least one cooking chamber for the preparation of food and at least one manually movable door. By means of the door at least one charging opening of the cooking chamber can be opened and closed. At least one motor auxiliary drive is provided. The auxiliary drive is suitable and designed to support a manual opening of the door at least temporarily.

The oven according to the invention has many advantages. A significant advantage is that the manual opening of the door is supported by a motorized auxiliary drive. This makes a very easy and easy opening of the door possible. Especially in the case of doors which are pressed firmly against the cooking chamber opening for thermal insulation and therefore initially require a higher force for opening, such support is very helpful. This is sometimes particularly advantageous if the user in the kitchen has only one hand to open and in the other hand z. B. balances a baking sheet. By supporting the auxiliary drive, the user must apply much less force. This is the handling of the inventive oven not only more convenient, but also safer.

Furthermore, such an auxiliary drive allows a very ergonomic and user-friendly opening of the door. The user can open the door in the usual manner, since the required handiness of the opening process is not significantly different than when opening well-known doors with purely manual function. This is a significant advantage over fully automatic doors where the user merely operates a switch and then opens the door without further action. Many users often perceive such fully automatic doors as strange, since the usual movement in the kitchen operation is disturbed. The oven invention, however, facilitates the opening by the auxiliary drive and at the same time allows the usual handling when operating the oven door, z. For example, to quickly check the consistency of a roast. The auxiliary drive is also particularly reliable, since there is no unwanted door opening, for example, by accidental operation of a door opener or switch.

For the purposes of this application, the term door includes in particular other belonging to a door device components such. As hinges, handles, controls, cables and wires, panels and the like. The door is in particular pivotally received on a device body. It is preferred that the door is designed as a cooking chamber door with a handle.

The auxiliary drive is in particular designed to be electrically and / or hydraulically and / or pneumatically and / or magnetically drivable. For example, the auxiliary drive comprises at least one electric motor. Also possible are drives with ultrasonic motors and / or electroactive polymers, so-called artificial muscles. To adapt engine speed and desired torque, at least one transmission device can be provided. The auxiliary drive preferably has mechanical transmission devices, such. As linkage, levers, gears, racks, cables or the like. It can also be provided electrical, magnetic, hydraulic and / or pneumatic transmission facilities.

In a particularly preferred embodiment, the auxiliary drive comprises at least one sensor device for detecting a characteristic state for an opening operation of the door. In particular, the sensor device is operatively connected to a control device, by means of which the detected values can be evaluated. The control device is in particular operatively connected to the auxiliary drive. The sensor device can also be provided for detecting a characteristic state for a closing operation of the door. In particular, the auxiliary drive is suitable and designed, depending on the detected state of the sensor device, a manual movement of the door with a suitable Assist to assist. Preferably, the opening of the door is supportable. Closing may also be supportable as a function of the state detected by the sensor device.

Preferably, the power of the auxiliary drive is adjusted so that the manual force or muscle power is supported with a suitable auxiliary power. In this case, the force applied for a given movement of the door auxiliary power can be set ex-factory. But it is also possible that the assistant is customizable by a user and / or by the service. In particular, a suitable auxiliary power is provided for different movements and / or positions of the door, for example, comparable with a map control. For example, during the opening process in an early phase, a higher auxiliary force may be provided than in a later phase. This has the advantage that the user can more easily overcome the pressing force of the door.

Preferably, the sensor device is suitable and designed to detect an opening angle of the door. The opening angle describes the position of the door between an open and a closed position. The opening angle of the door can be detected indirectly. For example, a detection of a position of a door hinge or a damping device is possible. But is also possible a direct detection of the opening angle, z. B. based on the position of the door to the device body.

For this purpose, the sensor device preferably comprises at least one displacement sensor and / or position sensor or the like. For example, the opening angle can be detected via an incremental encoder. At least one magnetic scanning sensor is also possible. For example, the sensor comprises a magnet, which moves in the field of at least one coil, so that a change in position can be detected inductively. It can also be provided an optical sensor, which z. B. allows a photoelectric scanning. Also possible is an electromechanical scanning, z. B. by means of a gear or rack encoder.

The sensor device may also comprise at least one acceleration sensor. It can also be provided at least one motion sensor and / or centrifugal force sensor and / or speed sensor. Also possible is a gravity sensor and / or a direction sensor. It can also be provided at least one door contact sensor. Such developments allow not only the detection of the door position and the determination of the direction of movement or the current speed of the door. As a result, the auxiliary drive can be controlled in a particularly targeted manner, so that the support can be optimally adapted to the respective manual movement.

Preferably, the sensor device is suitable and designed for detecting a force applied to the movement of the door. In particular, the force is detected which a user applies when opening and / or closing the door. The force can be detected as torque at a pivot axis of the door. Also possible is a force detection via a connected to the door and the device body linkage. However, it is also possible that the manual force necessary for moving the door is determined by preliminary tests and stored in a control device for the auxiliary drive. In such a case z. B. applied at a certain direction of movement and a certain opening angle a preset support force by the auxiliary drive.

The sensor device preferably comprises at least one force sensor. For example, it is possible to use a force sensor with a spring body which has an electrical resistance variable by elastic deformation. Also possible is a piezoceramic force sensor. It is also possible to provide an electromagnetic force sensor with a coil arranged in a magnetic field, with the holding force of the coil being compensated by a control loop, depending on the external force. Based on the power required for compensation while the acting force is determined. Also possible are other sensors suitable for sensing a force. But it can also be provided at least one touch sensor. This makes it possible to detect whether a handle or the door is being touched without a manual force having already been applied for moving the door.

It is particularly preferred that the door is pivotally received on a device body. In this case, sensor device is arranged in particular at least partially on the device body. The term "on the device body" is to be understood as "in the device body". Such an arrangement has the advantage over accommodation on the door that the sensor device does not have to be integrated into new doors or door handles, in particular in the case of a facelift. But it is also possible that at least part of the sensor device and, for example, a sensor is provided in the door. In particular, the sensor device is arranged on components not visible to the outside, such as. B. a door hinge or a door support. Such parts are often subject to a lower rate of change than, for example, the door leaf or the door handle. Preferably, the auxiliary drive is at least partially disposed in the device body. In particular, a motor of the auxiliary drive is provided in the device body.

It is also particularly preferred that the sensor device is at least partially disposed on the auxiliary drive. In particular, at least one sensor of the sensor device is arranged on the auxiliary drive. Other components of the sensor device, such as. As a control or regulating device and the power supply are preferably housed in other spaces of the device body. The sensor device is preferably arranged adjacent to a stop of the door on the device body and / or a hinge device.

The auxiliary drive may comprise at least one linkage. The linkage is particularly suitable and intended to transmit the power provided by the auxiliary drive to the door. Preferably, the sensor device is suitable and designed to detect a characteristic of the opening angle range of the door position of the linkage. The sensor device comprises for this purpose at least one of the sensors described above. For example, the opening angle of the door is tapped via an incremental sensor and / or position sensor on the linkage.

In an advantageous development, it is preferred that the auxiliary drive is suitable and designed to support a manual closing of the door at least temporarily. Support for opening and closing is particularly convenient.

The door is in particular pivotally received on the device body. In this case, the door can be moved in an opening angle range relative to the device body between a first end position and a second end position. In the first end position, the feed opening is closed. In the second end position, the feed opening is open. In this case, the auxiliary drive is particularly suitable and designed to support the manual movement of the door in a defined opening angle range. For example, values for the opening angle of the door can be stored in a control unit of the auxiliary drive, upon reaching which the support starts and / or suspends. It is also possible to specify a plurality of opening angle ranges, in each of which a preset or currently calculated auxiliary force is applied. It can also be provided a time-dependent control of the auxiliary drive, wherein after reaching an opening angle, the support for a certain duration begins.

Preferably, the auxiliary drive is suitable and designed to assist the manual movement of the door over at least one third of the opening angle range, starting from the first end position. It can also be provided less than a third. But it is also possible to support more than half or even over the entire opening angle range. It can also be supported via a suitable other opening angle range between the first and second end position.

In particular, when opening the door is supported, so less muscle power must be spent. This is particularly advantageous in doors which have a weight balance with a spring or the like, since when opening the initial spring force can be overcome more easily. It may also be provided assistance in closing the door, so that here a braking or damping effect occurs. As a result, less muscle power must be expended to z. B. to prevent slamming the door.

It is also possible that the auxiliary drive is suitable and designed to support the manual movement of the door over at least one third of the opening angle range starting from the second end position. As described above for the opening angle range starting from the first end position, more or less than a third is possible. This has the advantage that z. B. the initial "lifting" the open door when closing is facilitated. It can be supported in this opening angle range but also when opening.

It is also possible that the auxiliary drive is suitable and designed to delay a movement of the door in at least one opening angle region adjacent to the first end position. It is also possible to delay movement of the door in at least one opening angle region adjacent to the second end position. The delay is achieved in particular by applying an opposite force to the manual movement. Preferably, we dampened the door movement. This has the advantage that z. B. a cushioning in the hinge can be improved or saved.

In an advantageous development, at least one locking device is provided. The locking device is particularly suitable and designed to press the door with a contact force in front of the feed opening. In this case, the auxiliary drive is suitable and designed to overcome the contact pressure in a manual movement of the door and preferably when opening. Preferably, the auxiliary power is adjusted taking into account the contact pressure. By the closing device in particular a dense concern of the door is achieved, so there is no heat loss from the treatment room. For this purpose, the locking device z. B. be formed as a spring in a door hinge. It is also possible that the auxiliary drive is designed for pressing the door.

In another development, the auxiliary drive comprises at least one safety device for locking the door during at least one operating state. For this purpose, the auxiliary drive or the safety device are preferably operatively connected to a control device of the household appliance. The operating state can z. B. be a cooking program. More preferably, the safety device locks the door during a pyrolysis operation so that opening of the door is blocked in the presence of high temperatures.

The auxiliary drive may have at least one opening device. The opening device is in particular suitable and designed to automatically at least partially open and / or close the door as a function of at least one operating state. In particular, the door is opened for cooling and / or for venting the cooking chamber. The opening may also be coupled with a fan operation. After such an opening phase, the door can also be closed again by the auxiliary drive.

Further advantages and features of the invention will become apparent from the embodiment, which is explained below with reference to the accompanying figures.

Figur 1

ein erfindungsgemäßer Backofen in einer stark schematisierten, perspektivischen Darstellung;

Figur 2

eine schematisierte Darstellung eines Backofens in einer geschnittenen Seitenansicht;

Figur 3

ein Backofen in einer perspektivischen Darstellung;

Figur 4

eine weitere schematisierte Darstellung eines Backofens in einer geschnittenen Seitenansicht; und

Figur 5

eine Skizze eines Kraftverlaufs.

In the figures show:

FIG. 1

an inventive oven in a highly schematic, perspective view;

FIG. 2

a schematic representation of a baking oven in a sectional side view;

FIG. 3

an oven in a perspective view;

FIG. 4

a further schematic representation of a baking oven in a sectional side view; and

FIG. 5

a sketch of a course of force.

The FIG. 1 shows a baking oven 1 according to the invention with a heatable cooking chamber 2. The oven 1 is designed here as a stove with hob 102. The oven 1 can also be designed as a built-in appliance or as a stand-alone oven 1. It is also possible to train as a combination device with microwave function and / or steaming function. For heating the cooking chamber 2, for example, a thermal heat source and / or a Mikrowellenheizquelle can be provided.

The oven 1 can be operated via an operating device 101. In this way, for example, the temperature in the cooking chamber 2 can be set. Preferably, various other operating modes and automatic functions can also be set. Also possible is an operation via a touch-sensitive surface or via a touchscreen and remotely via a computer or a smartphone or the like.

The cooking chamber 2 has a feed opening 12 which can be closed by a door 3 formed as a cooking chamber door 13. The door 3 is pivotally mounted on a device body 10 of the oven 1 via a hinge means 6, not shown here. The door 3 has a handle 23 for manual operation. In this case, an auxiliary drive 4 is provided, which supports a manual movement of the door 3 by an auxiliary power. The operation of the auxiliary drive 4 is under FIG. 4 described in more detail. The door 3 is shown in a first end position 15, in which the feed opening 12 is closed.

In the FIG. 2 is a side view of a baking oven 1 shown, in which the door 3 is in a second end position 25. In this case, the door 3 assumes an opening angle 35, in which the charging opening 12 is substantially completely opened. Between the first End position 15 and the second end position 25, the door 3 can be moved over an opening angle range 5.

The FIG. 3 shows a door 3 with a device body 10, which consists here essentially of a Garraummuffel and corresponding add-on parts. The door 3 is shown at an opening angle 35 between the first end position 15 and the second end position 25.

In the FIG. 4 the auxiliary drive 4 of a baking oven 1 is shown in more detail. The auxiliary drive 4 here comprises an electric motor 24 and a linkage 14, which is provided for transmitting power between the motor 24 and the door 3. For this purpose, the linkage 14 is pivotally attached to the door 3. The motor 24 is housed in the device body 10. For example, the motor 24 is housed between an inner wall of the cooking chamber 2 and an outer housing part of the device body 10. The auxiliary drive 4 may also be arranged below or above the cooking chamber 2, wherein the rod 14 is to be adjusted according to the resulting lever paths. For example, the auxiliary drive 4, as in the FIG. 2 shown in a highly schematic manner, be arranged below the cooking chamber 2 or below the door 3 in the region of the hinge device 6.

By means of a hinge device 6, the door 3 is pivotally received on the device body 10. The hinge device 6 also includes a closing device 16, which presses the door 3 against the charging opening 12 with a defined contact pressure. As a result, a particularly tight contact of the door in the first end position 15 or in the closed state is achieved, so that heat losses are counteracted and unintentional opening is avoided. The closing device 16 may include, for example, a tension spring or compression spring. In addition, the hinge device 6 is preferably coupled to a damping device, not shown here, so that the movement of the door 3 upon reaching the first and / or the second end position 15, 25 is correspondingly damped or gently braked.

The mode of operation of the auxiliary drive 4 during an opening operation of the door 3 will now be presented by way of example. First, the door 3 is closed and is in the first end position 15. To open the door 3, the user pulls on the handle 23. The force expended by the user is transmitted via the door 3 to the linkage 14 and a sensor device 9 mounted there detected with a force sensor 19.

Alternatively and / or in addition to the force sensor 19, the sensor device 9 may also have an acceleration sensor and / or a motion sensor and / or a contact switch or other suitable sensors, by which the opening process can be sensed accordingly. The sensor device 9 is operatively connected to the auxiliary drive 4, so that the motor 24 of the auxiliary drive 4 is operated as a function of the detected opening process becomes. The activated auxiliary drive 4 moves via the linkage 14, the door 3, so that the manual opening operation is supported by a motor.

The auxiliary drive 4 is set here so that a sufficient force to overcome the contact pressure of the locking device 16 is available. For example, in the case of a purely manual opening of a baking-oven door, a force of approximately 30 N to 40 N can be expended on the handle 23 in order to overcome the closing device 16 accordingly. The auxiliary drive 4 of the oven 1 according to the invention now provides a motor assist, so that the user has to spend a much lower force when opening the door 3. Preferably, the force provided by the auxiliary drive 4 is tuned to the respective contact force of the locking device 16.

The closing device 16 is usually designed so that the contact pressure is provided substantially in an opening angle region 5 adjacent to the first end position 15 and decreases with increasing opening angle. The auxiliary drive 4 is therefore designed so that with a drop in the contact force and the motor power is adjusted down accordingly. For this purpose, the auxiliary drive 4 is controlled here as a function of the opening angle 35.

To determine the opening angle 35, the sensor device 9 detects here the position of the linkage 14. For this purpose, for example, a sensor may be provided which detects the position and / or the angle of the linkage 14. If the sensor device 9 detects a specific opening angle 5 of the door 3, the auxiliary power is correspondingly reduced. This is the case, for example, at an opening angle from about 30 °. The closed door 3 occupies an opening angle 35 of about 0 ° in the first end position 15. From an opening angle 35 of about 30 °, the contact pressure of the locking device 16 decreases continuously. In addition, the weight of the door 3 supports the opening movement. Therefore, the assistant is also shut down accordingly.

Upon reaching an opening angle 35 of about 45 °, the door 3 opens due to its own weight without significant additional effort. In this opening angle range 5, the auxiliary drive 4 provides no or only a very small auxiliary power available.

When the door 3 reaches an opening angle 35 of about 60 °, the user must apply a manual force to hold the weight of the door 3. The oven 1 according to the invention has the advantage that the user also has to expend a significantly lower force in this case. For this purpose, the force required to hold the door 3 is supported by the auxiliary drive 4, for example, by a corresponding counterforce or by a delay. Since the to Keeping the door 3 required force with increasing opening angle 35 increases accordingly, the motor power is increased accordingly.

With the further opening, the door 3 finally reaches its second end position 25 and is fully open. As described above, the auxiliary power is thereby increased, so that the movement is delayed and the door 3 is attenuated in its end position 25 passes. Such a configuration has the advantage that it can be dispensed with an often consuming end position damping.

The auxiliary drive 4 also allows motor assistance during the closing operation of the door 3. Similar to the opening process, the closing operation is detected by the force sensor 19 when the user attempts to close the door 3. Since the weight of the door must first be raised in the area of the second end position 25, the force provided here by the auxiliary drive 4 is set to the respective weight of the door 3. This is particularly advantageous because the door 3 in modern cooking appliances often has a significant weight. The further the door 3 approaches the first end position 15, the less force has to be expended for moving the door 3. The motor power is therefore adjusted and shut down accordingly.

Shortly before reaching the first end position 15 and approximately in the last third of the opening angle range 5 during the closing process, the auxiliary drive 4 brings a delay or a counterforce to the contact force of the closing device 16. This has the advantage that a particularly gentle closing of the door 3 is made possible. If the door 3 has reached the first end position 15, the auxiliary drive 4 pulls the door 3 with a defined contact force against the feed opening 12. This results in a tight fit. In such a case, the auxiliary drive 4 can also replace the locking device 16. In addition, caused by the auxiliary device 4 delay when closing the door 3 can replace a cushioning.

In addition to the adjustment of the auxiliary power as a function of the opening angle, a corresponding adjustment depending on the speed of movement of the door 3 may be provided. Thus, the movement process is supported not only with a corresponding force, but also with a corresponding speed, for example by the speed of the motor 24. This is for example advantageous if the user wants to open or close the door very quickly. Then the user does not have to pull or push against the force of the auxiliary drive 4 on the door 3.

The auxiliary drive 4 here comprises a safety device 7, which is operatively connected to a control device 103 of the oven 1. In this case, the safety device 7 queries the respective operating state or program state of the oven 1 from the control device 103. This has the advantage that in certain operating conditions, an opening of the door 3 can be prevented or delayed by the auxiliary drive 4.

If the oven 1 is located, for example, in a program with pyrolysis, the auxiliary drive 4 locks the door 3. This reliably prevents the door 3 from opening at high temperatures during pyrolysis. A delay of the door opening by the auxiliary drive 4 is useful, for example, in program functions in which correspondingly much hot steam or vapor in the cooking chamber 2 occur. Such gradual opening of the door 3 reliably prevents the vapor from hitting the user. For this purpose, the auxiliary drive 4 can also take into account corresponding values of humidity sensors or temperature sensors via the control device 103.

The auxiliary drive 4 here also includes an opening device 8. As a result, the door 3 can be opened by a motor even without direct action of a user. Such an automatic opening of the door 3 is for example advantageous if a food is cooked at the end of the program and should not continue to cook. The opening of the door 3 then allows a particularly rapid cooling and prevents unfavorable Weiterergaren. The opening device 8 can also be used to remove moisture and vapor from the cooking chamber 2. The opening device 8 may preferably close the door 3 again.

The FIG. 5 shows a highly schematic force curve for an opening operation of the door 3. The force required to open the door 3 45 is applied against the opening angle 35. The opening angle 35 extends from the first end position 15 or 0 ° opening angle 35 to the second end position 25 and to an opening angle 35 of about 90 °. The dotted line indicates the force curve in a purely manual opening or in manual operation 300 again. The dashed line represents the force curve in an oven 1 with auxiliary drive 4 again, in which the door 3 is opened in servo mode 400. The opening process has substantially below the FIG. 4 on the steps described above.

Initially, the contact force of the closing device 16 must first be overcome, wherein the force 45 required in the servo mode 400 is significantly lower than the force 45 to be applied in manual mode 300. Subsequently, in the opening angle range 5 between about 30 ° and about 45 °, a phase occurs, in which increasingly less force 45 has to be expended for opening. Therefore, the auxiliary power is reduced accordingly, wherein in servo mode 400 still significantly less force than in manual mode 300 is needed.

In a subsequent phase in the opening angle range 5 between about 45 ° and about 60 ° is essentially no effort required to open the door 3 on. Therefore, the auxiliary power in the servo operation 400 is withdrawn accordingly. In the last part before reaching the second end position 25 in the opening angle range 5 between about 60 ° and about 90 °, a corresponding force required to hold the door 3 is necessary. Due to the delay through the auxiliary drive 4, the holding force to be applied by the user in servo mode 400 is again significantly lower than in manual mode. The door 3 thus achieved attenuated on the one hand and on the other hand with considerably less effort their second end position 25th

The auxiliary power provided is preferably adapted according to the respective opening angle 35 of the door 3 detected by the sensor device 9. Depending on the opening angle 35, a previously fixed auxiliary power can be made available. However, it is also possible that the respectively provided auxiliary power is set individually as a function of the force sensor 19. In this case, for example, it may be predetermined at which force acting on the handle 23 a certain assisting force is applied.

The auxiliary power can also be predetermined, for example, as a function of the pressing force of the closing device 16 and as a function of the weight of the door 3. It is also possible that the user can make certain specifications via the operating device 101, by means of which the auxiliary power provided can be regulated accordingly. This has the advantage that the user can adjust the assistant to his respective physical strength.

LIST OF REFERENCE NUMBERS

1

oven

2

oven

3

door

4

auxiliary drive

5

Opening angle range

6

hinge means

7

safety device

8th

opening device

9

sensor device

10

device body

12

loading port

13

oven door

14

linkage

15

end position

16

closing device

19

force sensor

23

Handle

24

engine

25

end position

35

opening angle

45

force

101

operating device

102

hob

103

control device

300

manual

400

servo operation

Claims (15)

Oven (1) with at least one cooking chamber (2) for the preparation of food and at least one manually movable door (3), wherein by means of the door (3) at least one charging opening (12) of the cooking chamber (2) can be opened and closed, characterized in
is that at least one motor-driven auxiliary drive (4) is provided and is adapted and configured to a manual opening of the door (3) to support at least temporarily. Oven (1) according to the preceding claim, characterized in that the auxiliary drive (4) comprises at least one sensor device (9) for detecting a characteristic state for an opening operation and / or closing operation of the door (3) and that the auxiliary drive (4) thereto is suitable and designed to support a manual movement of the door (3) in dependence on the state detected by the sensor device (9). Oven (1) according to the preceding claim, characterized in that the sensor device (9) for detecting an opening angle (5) of the door (3) is suitable and designed. Oven (1) according to one of the two preceding claims, characterized in that the sensor device (9) for detecting a force applied to the movement of the door (3) is suitable and designed. Oven (1) according to one of the three preceding claims, characterized in that the door (3) is pivotally accommodated on a device body (10) and that the sensor device (9) on the device body (10) is arranged. Oven (1) according to one of the four preceding claims, characterized in that the sensor device (9) is arranged at least partially on the auxiliary drive (4). Baking oven (1) according to the preceding claim, characterized in that the auxiliary drive (4) at least one linkage (14) for transmitting power to the door (3) and that the sensor device (9) is suitable and designed, one for the opening angle range (5) to detect the door (3) characteristic position of the linkage (14). Oven (1) according to one of the preceding claims, characterized in that the auxiliary drive (4) is suitable and designed to support a manual closing of the door (3) at least temporarily. Oven (1) according to one of the preceding claims, characterized in that the door (3) is pivotably received on a device body (10), wherein the door (3) in a Öffnungsvvinkelbereich (5) between a first end position (15), in which the feed opening (12) is closed, and a second end position (25) in which the feed opening (12) is opened, relative to the device body (10) is movable and that the auxiliary drive (4) is suitable and adapted to the manual Move the door (3) in a defined opening angle range (5) to assist. Oven (1) according to the preceding claim, characterized in that the auxiliary drive (4) is adapted and adapted to manually move the door (3) over at least one third of the opening angle range (5) starting from the first end position (15) support. Oven (1) according to one of the two preceding claims, characterized in that the auxiliary drive (4) is suitable and designed to manually move the door (3) over at least one third of the opening angle range (5) starting from the second end position (25 ) to support. Oven (1) according to one of the three preceding claims, characterized in that the auxiliary drive (4) is suitable and designed to move the door (3) in at least one opening angle region (5) adjacent to the first end position (15) and / or to delay adjacent to the second end position (25). Oven (1) according to one of the preceding claims, characterized in that at least one closing device (16) is provided and adapted to press the door (3) with a contact force in front of the charging opening (12), the auxiliary drive (4 ) is adapted and adapted to overcome the contact pressure during a manual movement of the door (3). Oven (1) according to one of the preceding claims, characterized in that the auxiliary drive (4) comprises at least one safety device (7) for locking the door (3) during at least one operating state and in particular during a pyrolysis operation. Oven (1) according to one of the preceding claims, characterized in that the auxiliary drive (4) has at least one opening device (8) which is suitable and designed to automatically open the door (3) at least partially as a function of at least one operating state and / or close.

Images