Cooking appliance having a camera device

Abstract

A cooking appliance includes: a housing having a cooking chamber delimited by a housing wall and a first viewing opening in the housing wall arranged above the cooking chamber; a camera device arranged above the first viewing opening, the camera device having an image sensor and a lens, the lens defining an optical axis for observing the cooking chamber; a heating device for heating food to be cooked placed in the cooking chamber and/or a high-frequency generator for heating food to be cooked placed in the cooking chamber by microwave radiation; and a shielding channel extending between the camera device and the first viewing opening so as to shield the camera device from heat and/or microwave radiation. The first viewing opening is covered by a first viewing pane, and a second viewing pane is arranged at an upper end of the shielding channel.

1 . A cooking appliance, comprising:
 a housing having a cooking chamber delimited by a housing wall and a first viewing opening in the housing wall arranged above the cooking chamber;   a camera device arranged above the first viewing opening, the camera device comprising an image sensor and a lens, the lens defining an optical axis for observing the cooking chamber;   a heating device configured to heat food to be cooked placed in the cooking chamber and/or a high-frequency generator configured to heat food to be cooked placed in the cooking chamber by microwave radiation; and   a shielding channel extending between the camera device and the first viewing opening so as to shield the camera device from heat and/or microwave radiation,   wherein the first viewing opening is covered by a first viewing pane, and a second viewing pane is arranged at an upper end of the shielding channel,   wherein an air chamber is formed between the shielding channel and the camera device,   wherein an air supply configured to supply cooling air into the air chamber is arranged on the air chamber,   wherein the air supply comprises a nozzle, and   wherein the lens is at least partially arranged in the air chamber.   
     
     
         2 . The cooking appliance of  claim 1 , wherein the nozzle is directed toward the lens of the camera device. 
     
     
         3 . The cooking appliance  claim 1 , further comprising:
 a camera housing with a second viewing opening,   wherein the camera device is arranged above the second viewing opening.   
     
     
         4 . The cooking appliance  claim 1 , wherein the cooking appliance comprises the high-frequency generator, and
 wherein the shielding channel has an electrically conductive inner wall.   
     
     
         5 . The cooking appliance of  claim 4 , further comprising:
 a first seal comprising a fiberglass seal arranged between the shielding channel and the camera housing.   
     
     
         6 . The cooking appliance  claim 5 , wherein the shielding channel and the housing together form a plurality of contact points around a circumference of the shielding channel, and
 wherein the shielding channel and the housing are contact-free between the plurality of contact points.   
     
     
         7 . The cooking appliance of  claim 6 , wherein the contact points of the plurality of contact points comprise welding points, screw connections, and/or pin connections. 
     
     
         8 . The cooking appliance according of  claim 6 , further comprising:
 a second seal arranged in a region of the plurality of contact points and/or between the shielding channel and the housing,   wherein the second seal is arranged around the circumference of the shielding channel.   
     
     
         9 . The cooking appliance  claim 1 , wherein the second viewing pane comprises an electrically conductive transparent layer, and
 wherein the electrically conductive transparent layer is in galvanic contact with the shielding channel.   
     
     
         10 . The cooking appliance of  claim 9 , wherein the electrically conductive transparent layer comprises an indium tin oxide coating, a coating of fluorine-doped tin oxide, or a metal grid arranged in the shielding channel. 
     
     
         11 . The cooking appliance of  claim 1 , wherein an opaque electrically conductive layer is formed in an edge region of the second viewing pane. 
     
     
         12 . The cooking appliance of  claim 9 , further comprising:
 an electrically conductive third seal arranged between the second viewing pane and the shielding channel,   wherein the third seal forms the galvanic contact between the electrically conductive transparent layer and the shielding channel.   
     
     
         13 . The cooking appliance of  claim 12 , wherein the third seal comprises a metallic mesh or a silicone containing metal particles. 
     
     
         14 . The cooking appliance of  claim 1 , wherein the shielding channel has a first channel cross-section having a cross-sectional geometry that is impassable for microwave radiation having a wavelength greater than or equal to 12 cm at a microwave frequency of approximately 2.45 GHz, or for microwave radiation having a wavelength greater than or equal to 32 cm at a microwave frequency of around 915 MHz at a distance from an end of the lens facing the cooking chamber, which distance is measured parallel to the optical axis. 
     
     
         15 . The cooking appliance  claim 1 , wherein the shielding channel is funnel-shaped at least sectionally. 
     
     
         16 . The cooking appliance  claim 1 , further comprising:
 a cooling air apparatus configured to provide cooling air as provided cooling air,   wherein the provided cooling air is supplied via the air supply to the air chamber and further to the high-frequency generator for cooling of the high-frequency generator.