Cooking Appliance, Especially Built-In Wall Cooking Appliance, and Method For Controlling a Cooking Appliance

Abstract

A cooking appliance including a high-level cooking appliance having a muffle including a muffle compartment defining a cooking compartment with a muffle opening, a door for movement between an open and closed relationship with the muffle opening and a drive device controlled by a control device for moving the door, the cooking appliance including a detector for determining a trapping condition wherein an object becomes trapped as the door is being moved, wherein the detector is configured for detecting the trapping state by comparing a door movement parameter with a threshold value associated with door movement.

1 - 38 . (canceled) 
   
   
       39 . A cooking appliance including a high-level cooking appliance having a muffle including a muffle compartment defining a cooking compartment with a muffle opening, a door for movement between an open and closed relationship with the muffle opening and a drive device controlled by a control device for moving the door, the cooking appliance comprising a detector for determining a trapping condition wherein an object becomes trapped as the door is being moved, wherein the detector is configured for detecting the trapping state by comparing a door movement parameter with a threshold value associated with door movement. 
   
   
       40 . The cooking appliance according to  claim 39  wherein the door movement parameter corresponds to a speed of movement of the door and the threshold value corresponds to a permitted minimum speed. 
   
   
       41 . The cooking appliance according to  claim 39  wherein the door movement parameter corresponds to door acceleration and the threshold value corresponds to a permitted minimum door acceleration. 
   
   
       42 . The cooking appliance according to  claim 39  wherein the monitoring of the trapping state dependent on the threshold value is activated within a predetermined movement path of the door. 
   
   
       43 . The cooking appliance according to  claim 42  wherein the movement path of the door includes a zero position corresponding to a closed position of the door. 
   
   
       44 . The cooking appliance according to  claim 39  wherein monitoring of the trapping state is activated within the last movement path of the door before a zero position corresponding to a closed position of the door is reached. 
   
   
       45 . The cooking appliance according to  claim 39  wherein monitoring of the trapping state is activated within the last 15 mm, especially the last 10 mm, especially the last 5 mm movement path of the door before a zero position corresponding to a closed position of the door is reached. 
   
   
       46 . The cooking appliance according to  claim 39  wherein monitoring of the trapping state dependent on the threshold value is activated after a switchover from a different trapping state monitoring method. 
   
   
       47 . The cooking appliance according to  claim 39  and further comprising an end switch in operational association with the door wherein monitoring of the trapping state dependent on the threshold value is activated after activation of the end switch. 
   
   
       48 . The cooking appliance according to  claim 39  wherein monitoring of the trapping state dependent on the threshold value is activated during a switchover to a force-regulated closure movement of the door. 
   
   
       49 . The cooking appliance according to  claim 39  and further comprising a speed measurement device for measuring a speed of door movement. 
   
   
       50 . The cooking appliance according to  claim 39  and further comprising a speed measurement device for measuring a speed of door movement wherein an uncontrolled reduction in the speed of door movement is indicative of an object becoming trapped in the door. 
   
   
       51 . The cooking appliance according to  claim 39  and further comprising a speed measurement device for measuring a speed of door movement wherein a deviation from a setpoint speed of door movement is indicative of an object becoming trapped in the door. 
   
   
       52 . The cooking appliance according to  claim 50  wherein the monitoring of the speed of door movement includes monitoring door acceleration. 
   
   
       53 . The cooking appliance according to  claim 39  wherein the speed measuring device includes at least one sensor operationally disposed on a motor shaft of the drive device for generating signals corresponding to rotation of the motor shaft. 
   
   
       54 . The cooking appliance according to  claim 53  wherein the at least one sensor is formed as a Hall sensor configured for generating two sensor signals for each rotation of the motor shaft. 
   
   
       55 . The cooking appliance according to  claim 53  wherein the speed of door movement determined by a time difference between the sensor signals. 
   
   
       56 . The cooking appliance according to one of the  claims 53  and further comprising means for evaluating and averaging a plurality of sensor signals. 
   
   
       57 . The cooking appliance according to  claim 39  and further comprising means for reversing a direction of door movement when an object becomes trapped in the door. 
   
   
       58 . The cooking appliance according to  claim 39  and further comprising means for controlling the direction of displacement movement of the door as a function of the door speed. 
   
   
       59 . The cooking appliance according to  claim 58  wherein anti-trap protection is only activated when the setpoint speed of the door is reached. 
   
   
       60 . The cooking appliance according to  claim 39  and further comprising means for preventing a predetermined door driving force from being exceeded when an object becomes trapped in the door. 
   
   
       61 . The cooking appliance according to  claim 39  and further comprising at least one end switch operationally disposed in an area between the muffle opening and door and that an actuation of the at least one end switch deactivates an anti-trap protection device. 
   
   
       62 . The cooking appliance according to  claim 61  wherein the at least one end switch is able to be actuated within an opening dimension of about 4 mm between the muffle opening and the door. 
   
   
       63 . The cooking appliance according to one of the  claims 61  and further comprising means for moving the door with a predetermined force toward the muffle opening upon actuation of the at least one end switch. 
   
   
       64 . The cooking appliance according to  claim 39  and further comprising a high-level cooking appliance wherein the muffle opening is formed with a downwardly directed muffle opening and the door is formed as a base unit door. 
   
   
       65 . A method for operating a cooking appliance including a high-level cooking appliance having a muffle including a muffle compartment defining a cooking compartment with a muffle opening, a door for movement between an open and closed relationship with the muffle opening and a drive device controlled by a control device for moving the door, the method comprising the steps of providing a detector for determining a trapping condition wherein an object becomes trapped as the door is being moved, and detecting an object trapped in the door by a comparison of a door movement parameter with a threshold value associated with door movement. 
   
   
       66 . The method according to  claim 65  wherein the threshold value is based on a permitted minimum speed. 
   
   
       67 . The method according to  claim 65  wherein the threshold value is based on a differential speed. 
   
   
       68 . The method according to  claim 65  and further comprising the step of activating monitoring of the trapping state within a predetermined movement path of the door. 
   
   
       69 . The method according to  claim 68  and further comprising the step of defining the movement path of the door before a zero position of a closed door corresponding to a closed position. 
   
   
       70 . The method according to  claim 65  and further comprising the step of activating monitoring a trapping state within the last movement path of the door before it reaches a zero position corresponding to a closed position. 
   
   
       71 . The method according to  claim 69  and further comprising the step of activating monitoring of a trapping state within the last 15 mm, especially 10 mm, especially 5 mm movement path of the door before it reaches the zero position. 
   
   
       72 . The method according to  claim 65  and further comprising the step of activating monitoring of the trapping state dependent on the threshold value in conjunction with or after a switching off a different anti-trap protection method. 
   
   
       73 . The method according to  claim 65  and further comprising the step of activating monitoring of the trapping state dependent on the threshold value in conjunction with or after an activation of an end switch. 
   
   
       74 . The method according to  claim 65  and further comprising the step of activating monitoring of the trapping state dependent on the threshold value during a switchover to a force-regulated closing movement of the door. 
   
   
       75 . The method according to  claim 65  and further comprising the step of reversing a direction of door movement in the event of a trapping situation. 
   
   
       76 . The method according to  claim 65  wherein the step of detecting a speed of door movement results in detecting door speed reduced in an uncontrolled manner a trapping situation is indicated.