Oven and method of operating the same

Patent metadata

Field	Value
Publication number	US-9494322-B2
Application number	US-201314055372-A
Country	US
Kind code	B2
Filing date	Oct 16, 2013
Priority date	Jul 30, 2008
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

Abstract

The invention in particular relates to an oven ( 1 ) for baking food products ( 3 ). In order to improve automated heating procedures, the oven ( 1 ) comprises a camera ( 7 ) and a distance sensor ( 8 ), for example, which are used in concert to enable precise extraction of product-features that are relevant and used with automated heating procedures.

First claim

The invention claimed is:

1. Oven ( 1 ) for heating food products ( 3 ), comprising a chamber ( 2 ) adapted to receive the product ( 3 ) via a chamber opening ( 5 ), and a product-feature extracting system designed for extracting at least one product-feature representative of a configuration of the product ( 3 ), the system comprising: at least one camera ( 7 ) designed and positioned for recording product top-views ( 11 ); and at least one contour-level unit positioned at the chamber opening ( 5 ) and configured for extracting contour-levels of at least a section of the product ( 3 ) and an object ( 4 ) intended for insertion along with the product ( 3 ) into the chamber ( 2 ) in the course of insertion into the chamber; and a product-feature extracting unit for extracting the at least one product-feature on the basis of the product top-views ( 11 ) and contour-levels, wherein the oven is configured to automatically control heating of the product ( 3 ) based on said at least one product-feature.

2. Oven ( 1 ) according to claim 1 , wherein a mounting position of the at least one camera ( 7 ) is selected from the group consisting of: upper part of the opening ( 5 ), preferably at the entrance site, above a door ( 6 ) for closing and releasing the opening ( 5 ), upper part of the chamber ( 2 ), preferably halfway the depth of the chamber ( 2 ).

3. Oven ( 1 ) according to claim 1 , wherein the contour-level unit comprises at least one of a distance sensor ( 8 ) designed for measuring distances (d) between the sensor ( 8 ) and upper surface levels of the product ( 3 ) and the object ( 4 ), respectively, and at least one light emitting device, preferably at least one laser, more preferably at least one line laser ( 13 ), designed for highlighting a contour of the product ( 3 ) and object ( 4 ), respectively, by respectively projecting a beam of light, preferably a laser line ( 14 ), preferably at a predefined angle, onto the product ( 3 ) and object ( 4 ).

4. Oven ( 1 ) according to claim 3 , wherein at least one of the at least one distance sensors ( 8 ) is an infrared or ultrasonic distance sensor, and wherein at least one of the at least one light emitting devices is designed for emitting a red or green beam of light ( 14 ).

5. Oven ( 1 ) according to claim 1 , further comprising at least one temperature sensor, preferably an infrared temperature sensor, preferably mounted outside the chamber, preferably at an upper site of the opening, for measuring at least one of an initial temperature and initial temperature distribution of the product ( 3 ) and object ( 4 ), respectively.

6. Oven ( 1 ) according to claim 1 , further comprising a weight sensor for at least one of measuring and determining the weight of the product ( 3 ) and object ( 4 ), respectively.

7. Oven ( 1 ) according claim 1 , wherein the product-feature is selected from the group consisting of: vertical cross section, horizontal cross section, shape, particularly 3d-model, surface, surface area, volume, dimension, particularly length, height and width of the product ( 3 ), center-of-gravity of the product ( 3 ) and center-of-gravity to surface distance.

Assignees

• Electrolux Home Products Corp Nv

Inventors

• Luckhardt Christoph
• Ruther Florian

Classifications

• F24C7/085 Primary

  on baking ovens · CPC title

• A47J37/00

  Baking; Roasting; Grilling; Frying (bakers' ovens, non-domestic baking apparatus or equipment A21B; domestic stoves or ranges F24B, F24C) · CPC title

• F24C7/08

  Arrangement or mounting of control or safety devices · CPC title

• H05B1/0263

  Ovens · CPC title