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Solution Overview
Problem
Conventional ovens require opening and closing the entire cooking chamber to check the status of food, leading to inconvenience and heat loss, and the door is prone to deformation due to inadequate support.
Innovation Solution
An improved hinge structure for the oven door allows selective opening and closing of individual cooking chambers, featuring a second hinge unit with a hinge holder, hinge frame, hinge link, support rod, elastic member, and slider to maximize the opening area and prevent deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the door is mounted on the main body to open and close the entire cooking chamber, then the door structure is simple, but the user must open the entire cooking chamber to check food status even when only a part is used, causing heat loss and inconvenience
Solution Approach 1:
The door is divided into a first door and a second door that can operate independently. The first door opens to provide access to a first cooking chamber, while the second door can be opened separately to provide access to a second cooking chamber. This segmentation allows users to open only the necessary portion of the door structure, minimizing heat loss while maintaining ease of operation for checking food status in specific chambers.
2Device complexity
If the door is supported only by support frames respectively coupled to both sides, then the door structure is simple, but the door may be deformed due to insufficient support
Solution Approach 1:
The hinge structure incorporates a reinforcing unit with a U-shaped cross-section that is coupled to the door frame at specific locations. This reinforcing unit provides localized structural support and rigidity to the door assembly, preventing deformation while maintaining overall structural simplicity. The reinforcement is strategically placed where needed rather than throughout the entire structure.
3Loss of energy
If a second hinge unit is added to enable selective opening of individual cooking chambers, then the opening area is maximized and heat loss is prevented, but the hinge structure becomes more complex
Solution Approach 1:
The hinge structure is segmented into a first hinge unit and a second hinge unit that can operate independently. The first hinge unit connects the first door to the main body, while the second hinge unit connects the second door to the first door. This segmentation enables selective opening of individual cooking chambers, maximizing energy efficiency by allowing users to open only the necessary door while managing complexity through modular design.
Solution Approach 2:
The second door is coupled to the first door, creating a nested configuration where the second hinge unit is effectively nested within the overall door assembly. This nesting approach allows the complex multi-door functionality to be achieved while maintaining a compact and organized structural arrangement.
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 solution enables efficient monitoring of cooking without heat loss and prevents door deformation by allowing selective access to part of the cooking chamber, enhancing user convenience and structural integrity.
Implementation Method 1
an elastic member accommodated in the hinge frame to generate an elastic force, and, when the second door is opened, provide the elastic force in a direction in which the second door is closed
Data Source
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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.