Electric Range Control Board Support and Cooling for Heat Management

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Solution Overview

Problem

Existing electric ranges face challenges in maintaining the rigidity of brackets supporting components and in effectively cooling the control board to prevent malfunctions due to heat generation, which can lead to deformation and operational issues.

Innovation Solution

The electric range incorporates a support member with a rod and elastic members to securely adhere the control board to a cover plate, creating an air flow space for cooling and enhancing structural rigidity by using a combination of rods, elastic members, and strategically placed mounting protrusions to stabilize the control board and upper bracket.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the control board is positioned close to the heating element for compact design, then the device complexity is reduced, but the control board temperature increases leading to malfunctions

Engineering Contradiction:
Improvestructural complexityVSAvoidcontrol board temperature
Core Design Contradiction:
Device complexityVSTemperature

Solution Approach 1:

The patent introduces a vertical dimension by positioning the control board on the upper bracket above the heating element rather than placing it horizontally adjacent to the heating element. This vertical arrangement maintains compact overall dimensions while creating thermal separation between the heat-generating heating element and the temperature-sensitive control board, thereby resolving the contradiction between compact design and temperature control.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Loss of substance

If brackets are made thinner to reduce material usage, then the loss of substance decreases, but the rigidity of the brackets deteriorates

Engineering Contradiction:
Improvematerial usageVSAvoidbracket rigidity
Core Design Contradiction:
Loss of substanceVSStability of the object's composition

Solution Approach 1:

The patent employs curved or bent plate structures in the bracket design rather than simple flat plates. The upper bracket includes a bent plate portion that curves to support the control board, and the side bracket has a bent portion forming a receiving space. These curved structures provide enhanced rigidity and structural strength while maintaining thin material thickness, thereby resolving the contradiction between material reduction and rigidity maintenance.

Inventive Principle:
Principle #14Spheroidality (Curvature)

3Ease of manufacture

If the control board is loosely mounted for easy installation, then the ease of manufacture increases, but the reliability of the control board positioning deteriorates

Engineering Contradiction:
Improveinstallation easeVSAvoidcontrol board positioning stability
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent divides the bracket structure into multiple segmented components including an upper bracket with a receiving space, side brackets with positioning protrusions, and a control board with corresponding positioning grooves. These segmented parts can be manufactured separately and assembled together through simple insertion and engagement, providing easy installation while the interlocking positioning features ensure stable and reliable positioning of the control board.

Inventive Principle:
Principle #1Segmentation

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 effectively cools the control board and stabilizes it, preventing malfunctions and maintaining structural integrity by providing a stable support structure and adequate airflow, thus enhancing the operational reliability of the electric range.

Implementation Method 1

A first elastic member may be inserted into the rod, may be disposed at a circumference of the rod, and may have one side contacting the bottom surface of the upper bracket. The first elastic member may elastically support the rod. The first elastic member may apply pressure to the rod to push the rod upward, and accordingly, the control board coupled to the rod may also be pressed or pushed upward and may be adhered to the cover plate.

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

an electric range may cool a control board by providing an air flow space at or near an arrangement portion of the control board

Methodology Applied
Scientific EffectConvection: Convection

Implementation Method 3

An induction heating method may apply high-frequency power to a coil to generate a magnetic field around the coil and heat an object to be heated made of metal using an eddy current generated from the magnetic field.

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 4

heat an object to be heated made of metal using an eddy current generated from the magnetic field

Methodology Applied
Scientific EffectEddy current: Eddy Currents

Data Source

PatentUS11796181B2Electric range
Publication Date: 2023.10.24 LG ELECTRONICS INC
  • US11796181B2 patent drawing
  • US11796181B2 patent drawing
  • US11796181B2 patent drawing

AI summary

An electric range includes a case and a cover plate coupled to an upper surface of the case to place an object. Further, the electric range includes a plurality of heating portions disposed below the cover plate to heat the object and an upper bracket disposed under the heating portion to support the heating portion a control board disposed between the cover plate and the upper bracket. Furthermore, the electric range includes a support member having a first end disposed under the control board and a second end disposed on the upper bracket to support the control board and a base bracket disposed under the upper bracket and comprising a printed circuit board.