Method of baking and an oven

• US 8,263,907 B2
• Filed: 10/28/2009
• Issued: 09/11/2012
• Est. Priority Date: 10/31/2008
• Status: Active Grant

• Current Assignee: Moffat Pty., Limited
• Original Assignee: Moffat Pty., Limited
• Inventors: Willett, Paul Eaton
• Primary Examiner(s): Ahmadi, Mohsen
• Application Number:
  US12/607,338
• Publication Number:
  US 20100140250A1
• Time in Patent Office: 1,049 Days
• Field of Search: 219/392, 219394-395, 219397-398, 219/685, 219/762
• US Class Current: 219/392
• CPC Class Codes: A21B 1/40 characterised by the means for regulating the temperature
• CPC Class Codes: A21B 1/44 with surfaces rotating in a horizontal plane
• CPC Class Codes: F24C 7/08 Arrangement or mounting of control or safety devices

Abstract

A baker'"'"'s oven 10 and a method of operating the baking oven 10. The baking oven 10 including heating means 50 arranged to underlie baking trays 31 to provide a substantial proportion of the heat to the baking trays 31 than to other portions of the oven, a temperature sensor 62 for providing a signal indicative of oven temperature. An interface 60 is adapted to receive information from a baker indicative of a bake program and information corresponding to products being loaded into the oven. The control means 61 is operatively connected to the heating means 50, the temperature sensor 62 and the interface 60 to receive signals corresponding to oven variables comprising the oven temperature and a fixed baking time indicative of the product. The control means 61 is adapted to deactivate the heating means 50 after a first predetermined portion of the fixed baking time has elapsed in response to the oven temperature reaching a trip temperature.

Claims

1. A baker'"'"'s oven including:

an oven chamber;

support means for supporting one or more baking trays, including a rotatable turntable, the position of the baking tray defining a rectangle centered on an axis of rotation of the rotatable turntable and the rotatable turntable having an active region boundary that is defined as being between a circle defined by rotation of an outer most corner of the rectangle and a circle defined by rotation of the nearest approach of an edge of the rectangle to the axis;

heating means arranged to underlie the baking trays to provide a substantial proportion of the heat to the baking trays than to other portions of the oven, the heating means including a plurality of heating elements extending from a wall of the oven into the active region, each element having an inactive portion and an active portion, the inactive portion extending from the wall to the active portion which extends in the active region for more directly heating an underside of the baking trays;

a temperature sensor for providing a signal indicative of oven temperature;

an interface adapted to receive information from a baker indicative of a bake program and information corresponding to products being loaded into the oven; and

control means operatively connected to the heating means, the temperature sensor and the interface to receive signals corresponding to oven variables comprising the oven temperature and a fixed baking time indicative of the product;

the control means being adapted to deactivate the heating means after a first predetermined portion of the fixed baking time has elapsed in response to the oven temperature reaching a trip temperature.

2. The baking oven of claim 1 wherein the required baking time and the trip temperature is input by the baker to the interface.

3. The baking oven of claim 1 wherein the control means is configured to calculate the trip temperature and baking time based on the product type.

4. The baking oven of claim 1 wherein the control means is adapted to deactivate the heating means after a second predetermined portion of the baking time independently of the oven temperature.

5. The baking oven of claim 4 wherein the second predetermined portion is about 95% of the baking time.

6. The baking oven of claim 1 wherein the control means is configured to thermostatically control the heating means.

7. The baking oven of claim 1 wherein the first predetermined portion is between 80% and 90% of the baking time.

8. The baking oven of claim 7 wherein the first predetermined portion is about 85%, of the baking time.

9. The baking oven of claim 1 wherein the trip temperature is preselected to be about 10 degrees below a high set temperature, the high set temperature being the highest maximum temperature the oven should reach at any time.

10. The baking oven of claim 1 wherein the oven chamber has an active region under the baking tray position and an inactive region positioned outwardly of the active region, the heating means including heating elements being positioned to provide substantially more heat to the active region than to the inactive region for more directly heating an underside of the baking tray position.

11. The baking oven of claim 1 wherein the heating elements are arranged to provide more than 2 times greater power density to the active region than to the inactive region.

12. The baking oven of claim 1 wherein the heating elements are arranged to provide 2.5 to 3.5 times greater power density to the active region than to the inactive region.

13. The baking oven of claim 1 wherein the heating elements are arranged to provide 2.9 to 3.1 times greater power density to the active region than to the inactive region.

14. A method of operating the baking oven including a heating means arranged to underlie baking trays on a support means, the heating means including a plurality of heating elements extending from a wall of the oven into the active region, each element having an inactive portion and an active portion, the inactive portion extending from the wall to the active portion, which extends in the active region for more directly heating an underside of the baking trays, the support means including a rotatable turntable, the position of the baking tray defining a rectangle centered on an axis of rotation of the rotatable turntable, the rotatable turntable having an active region boundary that is defined as being between a circle defined by rotation of an outer most corner of the rectangle and a circle defined by rotation of the nearest approach of an edge of the rectangle to the axis, whereby a substantial proportion of the heat is provided to the baking trays, the method including the steps of:

heating the heating means according to a bake program indicative of products loaded into the oven wherein the heating means and the supporting means are relatively moveable to reduce the incidence of localized burning of product on the baking trays proximal the heating means, and

deactivating the heating means after a first predetermined portion of a fixed baking time in response to the oven reaching a trip temperature.