Electric oven
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Solution Overview
Problem
Conventional electric ovens with electric heaters limited in uniform temperature increase within the cavity and face challenges in repair and part exchange due to the heater's fixed position.
Innovation Solution
Incorporation of planar heating elements that extend along one plane, supported by a detachable support member, allowing for radiant heat application to multiple surfaces of the cavity, enhancing temperature uniformity and facilitating easy repair by being detachable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a conventional electric heater is arranged in one side portion of the cavity, then the heater can be easily installed, but the temperature distribution inside the cavity becomes non-uniform
Solution Approach 1:
The heating function is segmented into multiple planar heating elements distributed across different surfaces (top, bottom, side walls) of the cavity. Each heating element independently heats the food from its respective surface, achieving uniform temperature distribution throughout the cavity without requiring a complex centralized heating system.
Solution Approach 2:
The heating approach transitions from a single-point or single-surface heater to multi-surface planar heating elements. By distributing heating surfaces across top, bottom, and side walls, the system achieves three-dimensional temperature uniformity, effectively solving the non-uniform heating problem caused by conventional single-location heaters.
2Ease of repair
If the electric heater is fixed in one position inside the cavity, then the heating structure is simple, but the heater cannot be easily detached for repair or replacement
Solution Approach 1:
The support member transitions from a fixed rigid structure to a detachable dynamic structure. The support leg can be separated from the cavity wall, enabling easy removal and installation of heating elements while maintaining structural integrity during operation. This dynamic design facilitates maintenance without requiring complex disassembly procedures.
Solution Approach 2:
The heating system is divided into modular components: heating elements, support members, and cavity wall attachments. Each component can be independently removed and replaced, significantly improving ease of repair and maintenance while keeping the overall structure relatively simple.
3Temperature
If planar heating elements are distributed across multiple surfaces of the cavity, then temperature uniformity is improved, but the number of components and installation complexity increases
Solution Approach 1:
The support member is designed with multi-functionality: it provides mechanical support for heating elements, attaches to the cavity wall, enables easy detachment for maintenance, and maintains proper positioning. This universal design consolidates multiple functions into a single component, reducing the overall number of parts and simplifying assembly despite the distributed heating element configuration.
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 achieves uniform temperature increase and ease of repair by allowing planar heating elements to be easily supported and detached, improving heating efficiency and maintenance.
Implementation Method 1
at least one planar heating elements which extend along one plane, are detachably supported by the support member, and apply radiant heat to the cavity
Data Source
AI summary
An electric oven includes a top plate and a bottom plate facing each other, two side plates facing each other, and a rear plate connecting the top plate, the bottom plate and the two side plates where the top plate, the bottom plate, the two side plates and the rear plate define a cavity having a front opening, a door which selectively opens and closes the front opening of the cavity, a casing which surrounds the cavity, a support member interposed between the casing and the cavity, and one or more planar heating elements which extend along one plane, are detachably supported by the support member, and apply radiant heat to the cavity.