Multi-zone oven with variable cavity sizes

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Solution Overview

Problem

Conventional convection ovens suffer from uneven heat distribution, leading to inconsistent cooking results and limited flexibility in cooking multiple types of food simultaneously, due to uniform air flow and fixed cooking chamber configurations.

Innovation Solution

The introduction of removable air plenums within the oven cavity allows for the creation of multiple, variable-height cooking chambers, each independently controlled for temperature and air flow, enabling more uniform heating and simultaneous cooking of diverse food items.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a conventional convection oven uses uniform air flow through the entire oven cavity, then the structure is simple and energy efficient, but the heat distribution becomes uneven leading to inconsistent cooking results

Engineering Contradiction:
Improvecooking consistencyVSAvoidair flow control structure
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The oven cavity is divided into multiple independently controllable zones using removable air plenums. Each zone can have its own air flow rate and temperature controlled by separate blowers, allowing uniform heat distribution across different regions while maintaining overall system simplicity through modular design.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If a conventional convection oven maintains a fixed cooking chamber configuration, then the device complexity is low, but the adaptability to cook different types of food simultaneously is limited

Engineering Contradiction:
Improvecooking flexibilityVSAvoidchamber configuration
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The air plenums are designed to be removable and reconfigurable, allowing the cooking chamber configuration to be dynamically adjusted based on cooking requirements. Users can add, remove, or reposition plenums to create different zone configurations for cooking various types of food simultaneously, while the modular nature keeps the complexity manageable.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If multiple convection ovens are used to cook different foods at different temperatures, then each food can be cooked optimally, but space and energy efficiency decrease

Engineering Contradiction:
Improvemulti-food cooking capabilityVSAvoidenergy efficiency
Core Design Contradiction:
Adaptability or versatilityVSLoss of energy

Solution Approach 1:

Multiple cooking zones are merged into a single oven cavity, allowing different types of food to be cooked simultaneously at different temperatures and air flow rates. The shared heating elements and cavity structure reduce overall energy consumption compared to operating multiple separate ovens, while still providing the versatility to handle diverse cooking requirements.

Inventive Principle:
Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This configuration ensures consistent cooking across all food items by providing uniform air flow and flexibility in chamber arrangement, reducing food waste and labor requirements while optimizing energy use.

Implementation Method 1

Some ovens may include a fan for forcing movement of heated air within the oven cavity, and those ovens are commonly referred to as convection ovens.

Methodology Applied
Scientific EffectConvection: Convection

Implementation Method 2

The fan initiates a flow of heated air by pulling air from the oven cavity through multiple openings on a back wall of the oven cavity.

Methodology Applied
Scientific EffectForced Convection: Forced Convection

Implementation Method 3

The oven also includes a heating element, which can be an electric resistance element or a gas burner, for generating heat energy to cook any food items placed within an oven cavity.

Methodology Applied
Scientific EffectJoule Heating: Joule Heating

Data Source

PatentUS9677774B2Multi-zone oven with variable cavity sizes
Publication Date: 2017.06.13 ALTO SHAAM INC
  • US9677774B2 patent drawing
  • US9677774B2 patent drawing
  • US9677774B2 patent drawing

AI summary

A convection oven is disclosed. The convection oven comprises a housing having an oven cavity and an oven door for access to the oven cavity, at least one air blower for generating heated air, one or more air channels for directing the heated air from the air blower toward the oven cavity, and one or more removable air plenums, wherein each removable air plenum is connected to one of the one or more air channels, comprises an air intake edge for receiving the heated air from the air channel, defines the top or the bottom of a cooking chamber within the oven cavity, and comprises a plurality of air vents for directing the heated air into the cooking chamber. The convection oven may further comprise a control panel for separately and independently controlling each of the cooking chambers defined by the removable air plenums.