Method of controlling laundry treating apparatus

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Solution Overview

Problem

Conventional laundry treating apparatuses consume a large amount of standby power when in remote control mode due to the need to maintain power supply to all operational elements until a control command is received, leading to inefficiency.

Innovation Solution

A method of controlling the laundry treating apparatus that supplies power only to the driving unit, input unit, and communication unit when a remote control command is received, and cuts off power to unnecessary components during standby operations, using a magnetic sensor to determine if the door is open, and disconnecting power if an error occurs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If power is supplied to all elements required to operate the laundry treating apparatus in remote control mode, then the apparatus can immediately execute control commands, but standby power consumption increases

Engineering Contradiction:
Improvereadiness to execute remote control commandVSAvoidstandby power consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The power supply system is segmented into two modes: full power supply mode (when local control is selected) and selective power supply mode (when remote control is selected). In remote control mode, power is supplied only to the communication unit and controller, while other units are powered down, thus reducing standby power consumption while maintaining readiness to execute commands

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The power supply state is dynamically adjusted based on the selected control mode. The controller transitions between different power supply configurations: when remote control mode is selected, only essential components remain powered; when local control mode is selected, full power supply is restored. This dynamic adaptation resolves the contradiction between readiness and energy consumption

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If the laundry treating apparatus maintains full power supply for remote control operation, then operational readiness is ensured, but energy efficiency deteriorates

Engineering Contradiction:
Improveremote control responsivenessVSAvoidstandby energy loss
Core Design Contradiction:
Ease of operationVSLoss of energy

Solution Approach 1:

The apparatus segments power supply by functional units. In remote control mode, only the communication unit (for receiving commands) and controller (for processing commands) remain powered. Other units such as the driving unit, heating unit, and water supply unit are powered down, thereby minimizing energy loss while preserving remote control responsiveness

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The power supply parameters are changed based on operational mode. When remote control mode is detected, the power supply voltage or current to non-essential units is reduced to zero or standby level, while essential units maintain full power. This parameter adjustment resolves the contradiction between operational readiness and energy efficiency

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS10718080B2Method of controlling laundry treating apparatus
Publication Date: 2020.07.21 LG ELECTRONICS INC
  • US10718080B2 patent drawing
  • US10718080B2 patent drawing
  • US10718080B2 patent drawing

AI summary

Disclosed is a method of controlling laundry treating apparatus including supplying power to a driving unit configured to rotate a drum, an input unit configured to input a control command and a communication unit configured to receive a remote control command transmitted from a remote control device, setting a remote control mode so as to operate the driving unit if the communication unit receives the remote control command, and executing a standby operation so as to cut off power supply to the driving unit and to maintain power supplied to the communication unit, when the remote control mode is set.