Washer Detergent Flow Path With Trap and Hidden Water Return

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Solution Overview

Problem

Existing laundry treatment machines face challenges in simplifying the assembly of detergent flow paths, preventing leakage, minimizing water discharge from traps due to pressure changes, and hiding water flow from the user's view when the door is opened.

Innovation Solution

The apparatus features a detergent flow path with a water trap and decelerating walls to slow down water flow, guiding it back into the cabinet, and an insulating part connecting the tub and cabinet to manage pressure changes, ensuring the water is not externally visible.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the detergent flow path is fixed to the detergent storage part and tub through clamps, then the connection is secure, but the assembly time is considerable and complex

Engineering Contradiction:
Improveconnection reliabilityVSAvoidassembly time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The detergent flow path is integrated with the detergent storage part through a unified structure where the flow path forms an integral part of the storage assembly, eliminating the need for separate clamp fasteners and reducing assembly steps while maintaining secure connection

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The detergent storage part is divided into modular components that can be easily assembled and disassembled without complex fastening mechanisms, allowing quick assembly while ensuring reliable connections through simplified interface designs

Inventive Principle:
Principle #1Segmentation

2Object-generated harmful factors

If the trap interrupts the connection between tub and detergent storage part, then foam discharge is prevented, but water stored in the trap discharges into the tub when door opens causing user doubt

Engineering Contradiction:
Improvefoam discharge preventionVSAvoidwater discharge causing user doubt
Core Design Contradiction:
Object-generated harmful factorsVSObject-affected harmful factors

Solution Approach 1:

A check valve is introduced as an intermediary component in the detergent flow path that allows controlled water flow while preventing unwanted discharge, mediating between the trap and tub to eliminate the harmful effect of water discharge when door opens

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The harmful effect of water discharge is extracted and redirected to a separate drainage path, isolating it from the main detergent flow path and preventing user doubt while maintaining the foam interruption function

Inventive Principle:
Principle #2Taking out (Extraction)

3Speed

If water flows quickly from the trap to the tub, then the flow path is clear, but the water discharge is visible and causes user concern

Engineering Contradiction:
Improvewater flow speedVSAvoidvisible water discharge
Core Design Contradiction:
SpeedVSObject-affected harmful factors

Solution Approach 1:

A guide structure acts as an intermediary that redirects water flow along the inner wall of the detergent storage part, preventing direct visible discharge into the tub while maintaining efficient water movement through the system

Inventive Principle:
Principle #24Intermediary (Mediator)

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 design simplifies assembly, prevents leakage, minimizes unwanted water discharge, and keeps the water flow hidden from view, enhancing user experience and machine reliability.

Implementation Method 1

a decelerating part provided to the insulating part connecting pipe to decelerate a flow speed of water moving from the trap forming pipe to the insulating part connecting pipe

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP3690119B1Apparatus for treating laundry
Publication Date: 2023.06.14 LG ELECTRONICS INC
  • EP3690119B1 patent drawingFigure 1
  • EP3690119B1 patent drawingFigure 2
  • EP3690119B1 patent drawingFigure 3

AI summary

Disclosed are an apparatus for treating laundry. The present disclosure includes a cabinet having an entrance and a door opening/closing the entrance, a tub providing a space for storing water therein and having a tub entrance provided to a surface facing a direction having the entrance located therein, a drum rotatably provided within the tub to provide a space for storing the laundry therein and having a drum entrance provided to the surface facing the direction having the entrance located therein, an insulating part having a first fixing body in a cylindrical shape fixed to the entrance, a second fixing body in a cylindrical shape fixed to the tub entrance, a connecting body connecting the first and second fixing bodies together to form a space for storing liquid therein between the first fixing body and the second body, and an inflow pipe perforating the first fixing body, a storage part provided within the cabinet to provide a space for storing detergent therein, a storage part connecting pipe discharging the detergent of the storage part, an insulating part connecting pipe connected to the inflow pipe, a trap forming pipe forming one of a P-trap, a U-trap and an S-trap between the storage part connecting pipe and the insulating part connecting pipe, and a decelerating part provided to the insulating part connecting pipe to decelerate a flow speed of water moving from the trap forming pipe to the insulating part connecting pipe.