Induction heating cooking device
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Solution Overview
Problem
Induction heating cooking devices lack intuitive visualization of the heating state, making it difficult for users to recognize the heating status, especially from a distance or without detailed observation, due to the absence of a visible flame.
Innovation Solution
The induction heating cooking device incorporates a transparent cooking panel with a light-shielding layer and a light source module that projects a virtual flame image onto the cooking container, using LEDs and an optical member to create a flame image with a three-dimensional effect, enhancing visibility and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a digital display is provided to show heating state, then heating state information is displayed, but recognizability is low and difficult to see from distance
Solution Approach 1:
The patent creates a virtual flame image that copies the visual appearance of a real flame using light sources and optical members. This virtual flame is projected onto the cooking container to visually indicate heating state, replacing the inadequate digital display with a more intuitive visual representation that maintains information accuracy while dramatically improving recognizability and visibility from distance.
2Illumination intensity
If light sources are used to create flame image, then heating state is visually recognizable, but artificial feel of light source exposure increases
Solution Approach 1:
The patent introduces a virtual flame image as an intermediary between the light sources and the user's perception. The light sources illuminate the virtual flame image projected on the cooking container rather than directly exposing users to light sources. This intermediary approach maintains high visibility and recognizability while reducing the artificial feel and harmful effects of direct light exposure.
Solution Approach 2:
The patent uses color-changing light sources (such as RGB LEDs) to create a virtual flame image that dynamically changes color to match different heating states and flame characteristics. By matching the color temperature and hue of real flames, the system reduces the artificial perception and makes the visual indication more natural and aesthetically pleasing.
3Illumination intensity
If transparent cooking panel is used, then flame image is visible, but light shielding becomes difficult
Solution Approach 1:
The patent applies local quality by making only the necessary portions of the cooking panel transparent while keeping other portions opaque or light-shielding. The transparent region is precisely positioned to allow the virtual flame image to pass through to the cooking container, while surrounding areas use light-shielding materials to prevent light leakage and improve overall aesthetic appearance, thus balancing visibility with light control.
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 virtual flame image allows users to intuitively recognize the heating state, providing a more natural and aesthetically pleasing experience while minimizing the artificial feel of the light source exposure, thus enhancing the product's quality and usability.
Implementation Method 1
The light source may include an LED.
Implementation Method 2
an induction coil for generating a magnetic field to inductively heat a cooking container put on the cooking counter
Implementation Method 3
a secondary current is induced to the cooking container, and Joule heat is generated due to a resistance component of the cooking container itself
Data Source
AI summary
An induction heating cooking device includes a cooking table having an auxiliary slit; an induction coil for generating a magnetic field so as to inductively heat a cooking container placed on the cooking table; multiple light sources disposed at the outside of the induction coil; and a main slit through which light emitted from the light sources passes. The induction heating cooking device forms a virtual flame image on the cooking container, thereby enabling the heating state of the induction heating cooking device to be intuitively checked.