Appliance for cooking by heating flow with stirring means
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Solution Overview
Problem
Existing electric cooking appliances with stirring devices are noisy and bulky, and they do not achieve efficient heating due to disturbed air flow and improper placement of heating elements.
Innovation Solution
A cooking appliance design featuring a cross-flow fan and heating elements positioned within a compact housing, where the fan generates a linear, undisturbed heating flow, reducing noise and enabling uniform heating, with specific geometric configurations for the fan and intake area to enhance cooking performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a centrifugal fan is used to generate hot air flow, then cooking function is achieved, but the appliance becomes noisy and bulky
Solution Approach 1:
The patent changes the fundamental parameter of fan type from centrifugal to cross-flow fan. This parameter change fundamentally alters the airflow generation mechanism, resulting in reduced noise levels and a more compact structure while maintaining the cooking function. The cross-flow fan's linear airflow pattern and lower rotational speed contribute to noise reduction, while its compact design reduces the overall appliance footprint.
2Reliability
If heating elements are improperly positioned, then appliance structure is simplified, but heating efficiency decreases and red spots appear on filaments
Solution Approach 1:
The patent applies local quality by strategically positioning heating elements in specific locations within the first compartment and arranging them at optimized angles relative to the cross-flow fan's airflow. This localized optimization ensures uniform heat distribution across the cooking surface while preventing red spots on filaments. The heating elements are positioned to receive consistent cooling airflow from the cross-flow fan, maintaining their operational reliability.
3Manufacturing precision
If air flow is disturbed, then device structure is simpler, but heating uniformity deteriorates
Solution Approach 1:
The patent introduces the cross-flow fan as an intermediary device that generates a linear, undisturbed airflow pattern. This intermediary airflow acts as a mediator between the heating elements and the cooking surface, ensuring uniform heat distribution. The cross-flow fan's design creates a steady, laminar flow that consistently cools the heating elements and distributes heat evenly, eliminating the need for complex airflow control mechanisms.
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 results in a quieter, more compact appliance with improved cooking efficiency and uniform heating, preventing red spots on heating elements and facilitating easier food preparation.
Implementation Method 1
the ventilation system comprises a cross-flow fan... generates a heating flow... produces homogeneous cooling of the heating element
Implementation Method 2
the main heating device comprises at least one heating element arranged inside the first compartment
Data Source
AI summary
A cooking appliance includes a housing including a first compartment forming a cooking space, equipped with a holding device provided to receive ingredients, a stirring device arranged inside the holding device, the holding device and the stirring device being designed to be animated by a relative rotation with respect to each other, the housing further including a main heating device, including, in a second compartment, a ventilation system to generate a heating flow, wherein the ventilation system includes a cross-flow fan, and the main heating device includes at least one heating element arranged inside the first compartment.