Baking Oven Series-Parallel Heating Circuit to Reduce Energy Loss
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Solution Overview
Problem
Baking and cooking ovens with reduced energy consumption are often expensive due to the technical complexity involved in their design, which increases their cost and makes them less accessible.
Innovation Solution
A baking and cooking oven design featuring a first and second heating element connected in parallel and a third heating element connected in series with them, operating at a lower power by dividing the input voltage, allowing the first and second heating elements to operate below their nominal voltage, and the third heating element to operate below its nominal power, thereby reducing energy loss and enhancing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If heating elements are operated at nominal power to reduce preheating time, then productivity is improved, but energy consumption increases due to higher mean temperature during preheating
Solution Approach 1:
The patent changes the operating parameters of the heating elements by connecting them in a series-parallel configuration instead of operating all at full power. This divides the input voltage across multiple elements, reducing the mean temperature during preheating and thereby reducing energy loss while still achieving acceptable preheating times.
2Use of energy by moving object
If advanced energy reduction technologies are implemented, then energy consumption is reduced, but device complexity increases
Solution Approach 1:
The patent achieves energy reduction through a simple parameter change in the electrical circuit configuration - connecting heating elements in series-parallel arrangement. This avoids complex insulation systems, multiple independent heating zones, or sophisticated control systems, thereby maintaining simplicity while reducing energy consumption.
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
The solution results in a more energy-efficient oven with reduced energy consumption, lower operational costs, and improved power efficiency by maintaining a lower mean temperature during preheating, which directly correlates with reduced energy loss, increasing the percentage of heat retained within the oven cavity.
Implementation Method 1
the heating elements are operated at a power lower than the nominal power of said heating elements because the input voltage of the oven is divided, wherein a first portion of the input voltage drops at the first and the second heating element and a second portion of the input voltage drops at the third heating element
Data Source
Figure 1
AI summary
The invention relates to a backing oven comprising at least a first, a second and a third heating element for heating a cavity of the oven, wherein the third heating element is connected in series with the first and the second heating element.