Hydraulic lifting support, washing machine with the hydraulic lifting support, and controlling method thereof

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Solution Overview

Problem

Existing washing machines require manual leveling, which is inconvenient and imprecise, especially for heavy machines, and can lead to vibration issues and reduced service life due to unlevel placement and vibration-induced instability, and users cannot add clothes mid-cycle without spilling water.

Innovation Solution

A hydraulic lifting support system with a liquid storage device and communicating device that uses hydraulic medium to automatically adjust the machine's height, allowing for adaptive leveling and enabling the door to be opened mid-cycle without spilling water by controlling the hydraulic medium flow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual leveling adjustment is used, then the washing machine can be leveled, but the adjustment process is inconvenient and time-consuming for heavy machines

Engineering Contradiction:

Improveleveling precisionVSAvoidadjustment convenience

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The hydraulic support system automatically adjusts the washing machine's leveling state without requiring manual operation. The system uses the washing machine's own weight and hydraulic pressure to achieve self-leveling, eliminating the need for users to manually adjust heavy bolt supports.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces the traditional manual mechanical adjustment system (bolt supports with screw rods and nut washers) with a hydraulic system. This substitution allows for easier and more precise adjustment by using hydraulic pressure instead of manual screwing operations.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If manual leveling adjustment is used, then the washing machine can be leveled, but the adjustment precision is relatively low

Engineering Contradiction:

Improveadjustment convenienceVSAvoidleveling precision

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent employs a hydraulic support system where hydraulic pressure is used to adjust the height of the washing machine's support legs. This hydraulic mechanism provides smoother and more precise control compared to manual mechanical adjustment, enabling better leveling accuracy.

Inventive Principle:

Principle #29Pneumatics and hydraulics

3Reliability

If the washing machine is placed unlevel or has support failure, then large vibration occurs during operation, but the vibration causes loosening of support screws and further instability

Engineering Contradiction:

Improvesupport stabilityVSAvoidvibration noise

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The hydraulic support system uses a sealed hydraulic chamber that prevents loosening and maintains stable support. The hydraulic medium provides consistent pressure to keep the support structure stable, preventing the vibration-induced loosening problem that occurs with traditional screw-based supports.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

Inventive Principle:

Principle #29Pneumatics and hydraulics

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 hydraulic lifting support system provides automatic and precise leveling, reduces vibration noise, and allows for adding clothes mid-cycle without water spillage, enhancing user convenience and extending the washing machine's service life.

Implementation Method 1

the hydraulic medium flows between the hydraulic supports along with the pressure changing, and the hydraulic medium drives the movable adjustment section to move axially for leveling under pressure

Methodology Applied

Scientific EffectHydraulic pressure: Hydraulic Press

Implementation Method 2

at least two hydraulic supports and the liquid storage device are communicated with each other by the communicating device; the hydraulic medium flows between the hydraulic supports along with the pressure changing

Methodology Applied

Scientific EffectPressure-driven fluid flow: Pressure Gradient

Data Source

PatentUS10808348B2Hydraulic lifting support, washing machine with the hydraulic lifting support, and controlling method thereof

Publication Date: 2020.10.20 QINGDAO HAIER WASHING MASCH CO LTD

AI summary

The present disclosure provides a hydraulic lifting support, washing machine and controlling method. The hydraulic lifting support comprises a hydraulic support, a communicating device and a liquid storage device. The hydraulic support comprises a fix section installed at a bottom of a household appliance, a movable adjustment section sleeved with the fix section and axially movable relative to the fix section; an accommodation chamber is arranged between the fix section and the movable adjustment section; at least two hydraulic supports and a liquid storage device are communicated with each other by a communicating device; the hydraulic medium flows between the hydraulic supports along with the pressure changing, and the hydraulic medium drives the movable adjustment section to move axially for leveling under pressure; the hydraulic medium is injected into/sucked from the hydraulic supports through the liquid storage device to control the lifting and lowering adjustment of the hydraulic supports.