Dual-Door Oven Hinge Structure for Partial Chamber Access
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Solution Overview
Problem
Conventional ovens with multiple cooking chambers require users to open and close all chambers to check on food, leading to inconvenience and heat loss, and the door structure is prone to deformation due to inadequate support.
Innovation Solution
An oven design featuring a first door with a reinforcing unit and a second door with a unique hinge structure, including a hinge shaft positioned behind the first door and a U-shaped link to prevent interference, allowing independent opening and closing of a part of the cooking chamber while preventing deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single door is used to close the entire cooking chamber, then the structure is simple, but the user cannot access only a part of the cooking chamber without opening the entire door, causing heat loss and inconvenience
Solution Approach 1:
The cooking chamber is divided into multiple independent sections (first cooking chamber and second cooking chamber) with separate doors (first door and second door). This allows users to open only the specific section needed, rather than the entire cooking chamber, thereby reducing heat loss and improving operational convenience.
2Device complexity
If the door is supported only by support frames coupled to both sides, then the structure is simple, but the door may deform under stress
Solution Approach 1:
Reinforcing units are strategically positioned at specific locations on the door (such as corners or high-stress areas) to provide localized structural reinforcement. This prevents door deformation without requiring a complete redesign of the entire door support structure, maintaining simplicity while improving stability.
3Loss of energy
If a second door is added to allow partial access, then heat loss is reduced, but the door structure becomes more complex and prone to deformation
Solution Approach 1:
The door system is segmented into a first door and a second door that can operate independently. The second door is rotatably coupled to the first door, allowing partial access to the cooking chamber without opening the main first door, thus minimizing heat loss while managing complexity through modular design.
Solution Approach 2:
Reinforcing units are added to the first door structure to locally strengthen areas that experience stress from the attached second door. This prevents deformation in critical zones without requiring reinforcement of the entire door assembly, balancing structural integrity with design simplicity.
4Ease of operation
If the hinge shaft is positioned in front of the first door, then the second door can be opened, but it interferes with the first door and causes deformation
Solution Approach 1:
The hinge shaft is repositioned from a front-facing position to a rearward position (behind the front surface of the first door). This spatial relocation in the depth dimension eliminates interference between the hinge mechanism and the first door, preventing deformation while maintaining full operability of the second door.
Data Source
AI summary
An oven having an improved hinge structure of a door, which is capable of preventing deformation of the door and opening a part of a plurality of cooking chambers is provided. The oven includes a main body, a cooking chamber provided inside of the main body, a first door rotatably coupled to the main body by a first hinge unit to open or close the cooking chamber, the first door including a door frame having an opening, at least one reinforcing unit coupled to the door frame, and configured to prevent deformation of the first door, a second door rotatably coupled to the first door, and configured to open or close the opening, and a second hinge unit configured to enable the second door to be rotatably coupled to the first door, and including a hinge shaft positioned behind a front surface of the first door.