Food baking oven, with airflow control devices of the heat dispersion from the baking chamber through the access span, and with integrated ventilation system for the thermal insulation with thermal barrier of the access span

Abstract

Domestic use food baking oven to be embedded is provided with a ventilation system for the thermal insulation of the baking chamber, an airflow control device of the heat dispersion from the baking chamber, and integrated ventilation system for the thermal insulation of the baking chamber. At the baking chamber access span, and in an operative baking condition with the baking chamber access door in an open condition, the forced airflow is generated by the ventilation system for the thermal insulation of the baking chamber, which is in a diverted condition at the baking chamber access span. The airflow is diverted by a flow diverter, being of the type which can be shut down as soon as the access door of the oven, in a closed condition, is arranged in abutment with the flow diverter or with a part of it.

1 . Food baking oven, with airflow control for heat dispersion and integrated ventilation, the oven comprising:
 a baking chamber being comprised of a frame with an access span, said chamber being frontally accessible through the access span, and a door for closing said baking chamber;   a cooling ventilation system for thermal insulation of the baking chamber, having an airflow licking an external surface of the baking chamber, the ventilation system being comprised of at least one environment air input vent corresponding to a lower border of the frame and a duct with a tangential fan, pushing sucked cold air towards at least one hot air exit vent located near the access span;   an airflow control device, corresponding to the hot air exit vent and controlling the heat dispersion from the baking chamber through the access span, wherein the control device comprises a flow diverter.   
   
   
       2 . Food baking oven, with airflow control, according to  claim 1 , wherein said flow diverter is elastically yielding. 
   
   
       3 . Food baking oven, with airflow control, according to  claim 1 , wherein the control device comprises an anchor plate joined in correspondence with the exit vent, said anchor plate being provided along a face with supports, each support being comprised of symmetrical and parallel walls spaced from and facing each other, in such a way as to interpose a rotational shaft, said flow diverter being hinged to each support. 
   
   
       4 . Food baking oven, with airflow control, according to  claim 1 , wherein said flow diverter is comprised of a rectilinear wing shaped deflector, having overhanging hooks corresponding to a side, each hook being engaged to the corresponding rotational shaft of each support, said flow diverter being of the dynamic type with respect to the static anchor plate. 
   
   
       5 . Food baking oven, with airflow control, according to  claim 1 , wherein said flow diverter is elastically hinged with respect to the anchor plate, due to the provision of springs, at least one spring being provided for each support. 
   
   
       6 . Food baking oven, with airflow control, according to  claim 5 , wherein each spiral spring is joined to the respective rotational shaft and with a first end acts on the flow diverter while a second end is located corresponding to the anchor plate. 
   
   
       7 . Integrated ventilation system for thermal insulation as a thermal barrier of an access span for food baking ovens, each oven having a baking chamber and an airflow control device controlling the heat dispersion from the baking chamber, according to  claim 1 , wherein the oven in a conventional condition of the food contained in the baking chamber is comprised of a ventilation airflow for the thermal insulation, being sucked through the environment air input vent, the airflow flowing along the duct peripheral with respect to said baking chamber, the airflow being sent by a tangential fan towards the air exit vent, when the door is in an open condition, the flow diverter being directed towards the bottom in such a way as to intercept the flow and deviate the airflow generating an airflow acting as an air blade barrier parallel to the access span in such a way as to involve at least all the wideness of said access span. 
   
   
       8 . Integrated ventilation system, according to  claim 7 , further comprising a door being closed and occluding the access span of the baking chamber of the oven, a tooth along a top edge of the door being in abutment with the outwardly directed surface of the flow diverter, in such a way as to counteract the elastic effect of the springs, wherein further pushing the door until reaching a closed condition, the flow diverter rotating towards the baking chamber and therefore to remain in an upwardly rotated position until the door is opened again, when the door opens, the progressive contextual elastic release of the flow diverter occurs. 
   
   
       9 . Integrated ventilation system according to  claim 7 , wherein said flow diverter, in an open door condition, is maintained in an open position due to the tension applied by the springs pushing downwards and in a predetermined position.