Cooking appliance
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Solution Overview
Problem
Existing cooking appliances require additional components like burner reflectors and stabilizers to manage heat and airflow, increasing complexity, manufacturing costs, and reducing the cooking chamber's volume and durability.
Innovation Solution
The cooking appliance integrates the heating device and circulation device in a way that the heating device is arranged outside the cooking chamber, allowing for natural draft and external air cooling, which reduces the need for additional components and enhances heat efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a burner reflector and stabilizer are added to protect the wall and stabilize the flame, then the wall is protected and flame stability is improved, but the number of components increases and manufacturing cost increases
Solution Approach 1:
The patent combines the burner reflector and stabilizer functions into a single integrated component - the rear wall structure itself. The rear wall is designed with a specific geometry that simultaneously reflects heat back to the burner and stabilizes the flame, eliminating the need for separate reflector and stabilizer components.
Solution Approach 2:
The rear wall is designed to perform multiple functions: it serves as the combustion chamber boundary, acts as a heat reflector, and functions as a flame stabilizer. This multi-functional design reduces the total number of components needed in the heating device.
2Reliability
If a burner reflector and stabilizer are added to protect the wall and stabilize the flame, then the wall is protected and flame stability is improved, but manufacturing cost increases
Solution Approach 1:
The patent combines the burner reflector and stabilizer functions into a single integrated component - the rear wall structure itself. The rear wall is designed with a specific geometry that simultaneously reflects heat back to the burner and stabilizes the flame, eliminating the need for separate reflector and stabilizer components.
3Stability of the object's composition
If the convection fan velocity is reduced or operated intermittently to stabilize the flame, then flame stability is improved, but the ability to realize various cooking methods is lost
Solution Approach 1:
The rear wall geometry is designed to passively stabilize the flame through its shape, which naturally guides airflow and maintains stable combustion without requiring active control of the convection fan. This allows the fan to operate at full velocity for various cooking methods while the flame remains stable due to the structural design.
4Power
If the heating device is arranged inside the cooking chamber, then heating is effective, but the installation space requirement limits the frontward-rearward directional depth of the cooking chamber
Solution Approach 1:
The heating device (burner) is extracted from the interior space of the cooking chamber and positioned at the rear exterior. The combustion chamber is formed using the rear wall and side walls, allowing the burner to be located outside the main cooking volume, thus maximizing the cooking chamber depth while maintaining effective heating.
5Reliability
If additional components like burner reflector and stabilizer are provided, then wall protection and flame stability are achieved, but the volume of the cooking chamber is reduced
Solution Approach 1:
The patent combines the burner reflector and stabilizer functions into a single integrated component - the rear wall structure itself. The rear wall is designed with a specific geometry that simultaneously reflects heat back to the burner and stabilizes the flame, eliminating the need for separate reflector and stabilizer components.
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 minimizes the frontward-rearward directional depth of the cooking chamber, maintains a stable flame, and improves the durability and heat efficiency of the appliance, while eliminating the need for separate stabilizers and reflectors.
Implementation Method 1
a burner (120) configured to heat the air in the combustion chamber (S5)
Implementation Method 2
a circulation fan (93) configured to transfer the air heated by the burner (120) to the cooking chamber (S1)
Implementation Method 3
the flame guide (140) may be open upward and rearward... the flame guide (140) prevents the flame generated by the burner (120) from heating a surface of the burner case (110)
Data Source
AI summary
A cooking appliance is proposed. The cooling appliance includes an outer case (10) and a frame (60) disposed in the outer case. The frame (60) has a cooking chamber (S1). The cooking appliance includes a circulation device (C) having a circulation chamber (SA) connecting with the cooking chamber (S1). A heating device (100) includes a combustion chamber (S5) connected to the circulation chamber (SA). The heating device (100) includes a burner (120) heating air introduced into the combustion chamber (S5). At this point, the heating device (100) includes a first inlet part (IP1) open toward a surface of the burner (120). A second inlet part (IP2) connected to the combustion chamber (S5) is provided between the heating device (100) and the outer case (10).