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Baker's ovens
| Details |
Inventors: Willett, Paul E.;
Assignee:
Primary Examiner: Yeung; James C.
Assistant Examiner:
Attorney, Agent or Firm: Weaver; D. Paul
A baker's oven of the type having an oven compartment with a loading door, and containing heating means and a horizontal support, rotatable about a vertical axis, for articles to be baked, has steaming means for producing steam within the oven compartment, such steaming means including a metal body in the upper part of the oven compartment and heated by the heating means, a passage in the body receiving, from any suitable source, water under pressure which is expelled in finely divided form through nozzles into the compartment, the nozzles being directed away from the doorway and in the direction of rotation of the rotary support. |
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DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention is applied to a baker's oven of the general type described in the specification of my said copending patent application having a casing 10 with a substantially cylindrical inner wall 11, an outer wall 12 and interposed insulating material 13, the casing being divided by insulated horizontal decks 14 into a number of superimposed compartments 15, each with a loading and unloading doorway 16 and hinged door 17.
A vertical drive shaft 18 passes coaxially through all of the oven compartments and is driven by a motor (not shown).
The drive shaft has fixed to it, in each of the compartments, a cylindrical core 19 of suitably reinforced sheet material packed with heat insulating material.
Horizontal arms 20 radiating from the lower part of the core 19 to a circular rim 21 carry an annular support tray 22 made up of a number of similar sections of mesh extending between succeeding arms 20 and the core 19 and rim 21, one of these mesh sections being removable, and being omitted from FIG.
1.
Each compartment 15 is individually heated by thermostatically controlled upper heating elements 23 and lower heating elements 24 secured, respectively, under the top, and above the bottom, of the oven compartment, each of the heating elements being of tube-encased type doubled about a small radius bend, the doubled element being curved to a section of a spiral.
Referring now to FIGS.
1, 2, 3 and 4 of the drawings, water injecting means for the production of steam in the oven compartment includes a body 25 which is formed of a metal block of square cross-section, cut away along one corner and having a central passage 26 formed in it from one end to a position near to its other end, a metal pipe 27 being connected to the passage.
A pair of nozzles 28 are engaged in tapped holes leading from one face of the body 25 and communicating with the passage 26.
The bore of each nozzle is of considerably lesser diameter than the passage 26, and each nozzle is such that it will eject water as a solid cone of fine spray or mist with an apex angle of about 80
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