Electric pot having improved function of continuing thermal-insulation operation

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Solution Overview

Problem

Existing electric pots require users to manually reset and wait for thermal-insulation operations each time they are reused, which is cumbersome and may lead to inefficiencies and safety risks due to interrupted temperature maintenance.

Innovation Solution

An electric pot with a controller and memory system that allows for continuous thermal-insulation operation by storing and retrieving settings, including target temperatures and continuation periods, even when the pot is detached and reattached, ensuring seamless re-initiation of heating based on stored information and content sufficiency checks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the thermal-insulation operation is stopped when the body is separated from the base, then the electric power supply is cut off for safety, but the operation cannot be resumed automatically when re-coupled, requiring manual re-setting which is cumbersome

Engineering Contradiction:
Improveease of thermal-insulation operation resumptionVSAvoidcomplexity of control system
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The controller stores the thermal-insulation operation settings and state in a memory before the body is separated from the base. When re-coupled, the controller automatically retrieves and resumes the stored operation without requiring user re-setting, thus applying preliminary action to preserve operation state

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The electric pot system automatically detects when the body is re-coupled to the base and autonomously resumes the thermal-insulation operation based on stored information. The system serves itself by automatically restoring the operation state without human intervention, eliminating the need for manual re-setting

Inventive Principle:
Principle #25Self-service

2Ease of operation

If the thermal-insulation operation continues after re-coupling the body and base, then user convenience is improved by automatic resumption, but the risk of fires and burns increases if temperature maintenance is not properly controlled

Engineering Contradiction:
Improveconvenience of thermal-insulation operationVSAvoidrisk of fires and burns
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The controller continuously monitors the temperature of the contents via a temperature sensor and adjusts the heater operation accordingly. When the body is re-coupled and thermal-insulation operation resumes, the feedback mechanism ensures the temperature is maintained within safe limits, preventing overheating that could cause fires or burns

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent replaces manual mechanical operation (user manually setting and monitoring temperature) with an automated electronic control system. The controller electronically manages the heater based on stored operation parameters and real-time temperature feedback, providing safer and more consistent temperature control than manual operation

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If the user manually re-sets the thermal-insulation operation each time the pot is reused, then the operation can be properly controlled, but time is lost due to re-setting and waiting periods

Engineering Contradiction:
Improveefficiency of pot usageVSAvoidtime for re-setting and waiting
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The controller performs preliminary action by storing the thermal-insulation operation settings and state in memory before separation occurs. This pre-preservation of operation data eliminates the need for time-consuming re-setting when the pot is reused, directly improving productivity by allowing immediate resumption of operation

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system maintains continuity of the thermal-insulation operation by preserving the operation state across separation and re-coupling events. The useful action of temperature maintenance continues uninterrupted from the user's perspective, eliminating idle waiting time and improving overall productivity of pot usage

Inventive Principle:
Principle #20Continuity of useful action

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 solution enhances user convenience by eliminating the need for manual re-setting and reduces the risk of fires and burns by ensuring consistent temperature maintenance and efficient heating operations.

Implementation Method 1

a heater for heating contents accommodated in the pot main body

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Implementation Method 2

a temperature sensor for measuring a temperature of the contents

Methodology Applied
Scientific EffectTemperature sensing: Thermocouple

Implementation Method 3

function of continuing a thermal-insulation operation

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Data Source

PatentEP3666131B1Electric pot having improved function of continuing thermal-insulation operation
Publication Date: 2021.10.27 LG ELECTRONICS INC
  • EP3666131B1 patent drawingFigure 1~2
  • EP3666131B1 patent drawingFigure 3~4
  • EP3666131B1 patent drawingFigure 5~6

AI summary

Disclosed herein is an electric pot including a controller that controls a heater to perform a thermal-insulation operation based on an input in relation to a thermal-insulation operation and based on information on temperatures, and a memory that receives information in relation to a thermal-insulation operation from the controller and stores the information and that retains the stored information in relation to a thermal-insulation operation regardless of whether a pot main body is attached to or detached from a supporter.