Oven Door Airflow Structure for Active Cooling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional oven door cooling methods suffer from inefficient cooling due to limited circulation of cold air, which can lead to the door becoming excessively hot and potentially causing burns to users.
Innovation Solution
The oven design incorporates a cooling fan, discharge duct, and a suction pipe system with vertically perforated slits in the door frame, allowing for enhanced air circulation and heat absorption through multiple flow-paths defined by glass panels, which increases the introduction and suction of outside cold air to improve cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If air is circulated through the door by convection, then the door cooling function is provided, but the cooling efficiency is deteriorated due to limited cold air circulation
Solution Approach 1:
The suction pipe is pre-positioned to actively draw cold air from the cooking chamber before it can accumulate, creating a preliminary cooling action that prevents heat buildup on the door surface. The cooling fan is positioned to preemptively circulate air through the door structure.
Solution Approach 2:
The invention uses a suction pipe connected to a cooling fan to create pneumatic flow that actively draws cold air through the door's internal flow-path. This pneumatic approach replaces passive convection with active air movement, significantly improving cooling efficiency.
2Temperature
If the cooking chamber is maintained at high temperature for food cooking, then cooking function is achieved, but the door becomes hot and may cause burns to users
Solution Approach 1:
The door is segmented into multiple glass panels (typically 3-4 layers) with insulating spaces between them. This segmentation creates thermal barriers that divide the heat transmission path, reducing the amount of heat reaching the outer door surface that contacts the user.
Solution Approach 2:
Multiple glass panels act as intermediary layers between the hot cooking chamber and the user. These intermediaries absorb and block heat transmission, protecting the user from direct thermal exposure while allowing the cooking chamber to maintain high temperature.
3Productivity
If multiple glass panels are installed in the door to define flow-paths, then cooling efficiency is improved, but device complexity increases
Solution Approach 1:
The multiple glass panels serve dual functions: they provide thermal insulation to protect users from heat while simultaneously creating flow-paths that enable efficient air circulation for door cooling. This multi-functionality improves cooling efficiency without requiring separate cooling structures.
Solution Approach 2:
The insulation function and cooling flow-path function are merged into a single structural element—the multi-pane glass door assembly. By combining these functions, the invention improves cooling efficiency while avoiding the added complexity of separate cooling channels or structures.
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 enhances door cooling efficiency by actively circulating and suctioning air, thereby reducing the door's temperature and maintaining user safety while maintaining minimal manufacturing costs and using a conventional oven structure.
Implementation Method 1
door cooling has been implemented as air is circulated through an air flow-path defined in the door by convection
Implementation Method 2
a suction pipe connecting the flow-path and the cooling fan with each other to allow a part of the air moving in the flow-path to be suctioned toward the cooling fan
Data Source
AI summary
An oven having enhanced cooling efficiency. The oven includes a cooking chamber, a door to open or close a front side of the cooking chamber, a cooling fan located above the cooking chamber to suction and blow outside air, a discharge duct to discharge the air, blown by the cooling fan, forward of the door, a plurality of flow-paths defined in the door to allow outside air to be introduced into and moved in the flow-path in association with discharge of the air through the discharge duct, and a suction pipe to connect at least one of the flow-paths and the cooling fan to each other. Suction force of the cooling fan is applied to the flow-paths of the door through the suction pipe as well as the interior of an electric machine room, allowing the air in the flow-path to be discharged to the outside through the suction pipe and the discharge duct. This assures more active air movement in the door and maximizes the cooling effect of the door.