Oven having multiple horizontal flow chambers

Abstract

Oven for dough products, comprising an oven chamber having conveyance means for according to a vertical conveyance path conveying multiple trays with dough products through the oven chamber, and a number of horizontally positioned flow chambers placed one above the other at least one side of the conveyance path, wherein the flow chambers are adapted for in horizontal direction supplying heated air and deflecting the air to the oven chamber for evenly distributing the supplied air over a tray.

1 - 37 . (canceled) 
   
   
       38 . Oven for dough products, comprising an oven chamber having a conveyor for according to a vertical conveyance path conveying multiple trays with dough products through the oven chamber, and a number of horizontally extending air injectors having a series of air outlets and bounding horizontally positioned flow chambers, wherein at one side of the conveyance path the air injectors are arranged in a first series of air injectors that are consecutive in vertical direction, and, with respect to the conveyance path at one side opposite of the first series, in a second series of air injectors that are consecutive in vertical direction, wherein the air injectors with the flow chambers are adapted for in horizontal direction supplying heated air and deflecting the air to the oven chamber via the series of air outlets for evenly distributing the supplied air over a tray, wherein the immediately consecutive air injectors within the first series are destined for simultaneous discharge of supplied air and the air injectors in the second series in opposite direction and together with the injectors of the first series are part of an air circuit having a driven air propeller, wherein the oven comprises a control for periodically changing the drive direction of the air propeller during vertical conveyance of the trays. 
   
   
       39 . Oven according to  claim 38 , wherein the opposite air injectors of the first and second series are situated in the same horizontal plane. 
   
   
       40 . Oven according to  claim 38 , wherein all immediately consecutive air injectors within the first series of air injectors are destined for simultaneous discharge of supplied air. 
   
   
       41 . Oven according to  claim 38 , wherein a direction of the air circuit is defined by a drive direction of the air propeller. 
   
   
       42 . Oven according to  claim 38 , wherein the air propeller comprises an axial ventilating fan having a drive shaft. 
   
   
       43 . Oven according to  claim 42 , wherein a direction of the air circuit is defined by a drive direction of the drive shaft. 
   
   
       44 . Oven according to  claim 38 , wherein the control comprises an adjustment for adjusting the period of the control. 
   
   
       45 . Oven according to  claim 38 , wherein the series of air outlets is joined together. 
   
   
       46 . Oven according to  claim 38 , wherein the flow chambers have a flow-through profile of which the size decreases in supply direction. 
   
   
       47 . Oven according to  claim 38 , wherein the flow chambers are adapted for directing the supplied air transverse to the horizontal supply direction. 
   
   
       48 . Oven according to  claim 38 , wherein the flow direction over immediately consecutive trays is substantially directed in the same direction. 
   
   
       49 . Oven according to  claim 38 , comprising a heating unit having an air heater and positioned adjacent to the conveyance path, wherein the flow chambers extend from the heating unit into the oven chamber. 
   
   
       50 . Oven according to  claim 38 , wherein the conveyor is adapted for according to several consecutive vertical conveyance paths conveying the trays through the oven chamber, wherein the flow chambers are positioned for generating a substantially closed air circulation per conveyance path. 
   
   
       51 . Oven according to  claim 38 , wherein the immediately consecutive air injectors within the series of air injectors, over their longitudinal direction, considered at least within the ultimate ends of the series of air outlets, are separated from each other. 
   
   
       52 . Oven according to  claim 38 , wherein the immediately consecutive air injectors within the series of air injectors, considered at least within the ultimate ends of the series of air outlets, at their longitudinal sides are free from a mutual connection. 
   
   
       53 . Oven according to  claim 38 , wherein the air injectors are defined by a shape-retaining metal housing in which the series of air outlets are provided. 
   
   
       54 . Oven according to  claim 38 , wherein the series of air outlets extends in longitudinal direction of the air injectors and parallel to a side of a tray. 
   
   
       55 . Oven according to  claim 38 , wherein the air outlets are directed for discharging the supplied air between the trays, wherein the conveyor is adapted for periodically pausing the conveyance of the vertically conveyed trays, wherein the pausing position of the trays is adjusted to the position of the air outlets for discharging the supplied air between the trays. 
   
   
       56 . Oven according to  claim 38 , wherein the air outlets are directed for bringing the supplied air to or between the trays with an upward or downward vertical directional component. 
   
   
       57 . Oven according to  claim 38 , wherein the air injectors comprise an elongated tube member that extends substantially free from the conveyance path into the oven chamber, wherein a wall of the tube member comprises at least one air outlet.