Ceramic Valve Middle Section Cold Water Supply Mechanism

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Solution Overview

Problem

Conventional dual-temperature faucets face issues with unintentional switching to hot water, leading to scalding hazards and gas leakage due to unstable water pressure and similar swinging angles for warm/hot modes, and require an improved inner ceramic valve design for reliable cold water supply.

Innovation Solution

A ceramic valve design featuring a casing, drive seat, coupling seat, rotary block, and fixed block with a braking shaft and biased fulcrum unit, allowing the valve to provide cold water when the handle is in the middle section by pivoting the braking rod from upright to inclined, ensuring the tunnel communicates with the cold water inlet, thus preventing mixed water states and ensuring stable cold water supply.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the handle is pulled up from the middle section in conventional dual-temperature faucets, then the preset water supply is in a mixed state, but this creates scalding hazards when cold water pressure is weak

Engineering Contradiction:

Improvewater supply safetyVSAvoidscalding hazard

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The ceramic valve is divided into three distinct functional sections: cold water supply section, mixed water supply section, and hot water supply section. Each section has dedicated water inlet passages and control mechanisms, ensuring that when the handle is pulled up from the middle section, only cold water can be supplied reliably without mixing with hot water, thus eliminating scalding hazards

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The ceramic valve body acts as an intermediary component that separates cold and hot water flows through its internal passage structure. The cold water inlet passage and hot water inlet passage are independently routed through the ceramic valve, allowing selective activation of cold water supply when needed, preventing direct mixing that could cause scalding

Inventive Principle:

Principle #24Intermediary (Mediator)

2Shape

If the cold/hot water inlets are partially open when the handle is pulled up, then aesthetic balance is maintained, but insufficient water pressure makes it impossible to ignite gas for hot water, leading to gas leakage

Engineering Contradiction:

Improveaesthetic balanceVSAvoidgas leakage

Core Design Contradiction:

ShapeVSObject-generated harmful factors

Solution Approach 1:

The valve mechanism employs dynamic control through handle positioning and braking rod activation. When the handle is pulled up, the system dynamically adjusts the opening state of water inlets based on the activated section. The braking rod can be pivoted to selectively open or close specific water passages, ensuring that when cold water section is activated, cold water inlet is fully open providing sufficient pressure, while hot water inlet remains closed, preventing gas leakage

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The braking rod mechanism provides feedback control for water inlet opening. The braking rod's position, controlled by the handle operation, directly controls the opening degree of cold and hot water inlets. This feedback mechanism ensures that when cold water supply is activated, the cold water inlet opens sufficiently to maintain proper water pressure for safe operation, while the hot water inlet remains closed

Inventive Principle:

Principle #23Feedback

3Shape

If the swinging angles of warm/hot water modes are made similar for aesthetic purposes, then visual balance is improved, but the user may accidentally shift to hot water mode causing scalding

Engineering Contradiction:

Improvevisual balanceVSAvoidscalding hazard

Core Design Contradiction:

ShapeVSObject-affected harmful factors

Solution Approach 1:

The ceramic valve employs asymmetric angular positioning for different water supply modes. The cold water supply mode, mixed water supply mode, and hot water supply mode are positioned at distinctly different angular ranges rather than symmetric intervals. This asymmetric design ensures that the transition zones between modes are clearly separated, preventing accidental activation of hot water mode when the user intends to use cold or mixed water, while still maintaining aesthetic balance through the overall valve design

Inventive Principle:

Principle #4Asymmetry

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 design enhances operational safety by ensuring cold water supply in the middle section, reducing scalding hazards and gas leakage risks, while maintaining aesthetic balance and functionality.

Implementation Method 1

pivoting the braking rod from upright to inclined, ensuring the tunnel communicates with the cold water inlet

Methodology Applied

Scientific EffectMechanical motion and rotation:

Data Source

PatentUS9464417B2Ceramic valve with a middle section having a cold water supply function

Publication Date: 2016.10.11 KUCHING INT

AI summary

A ceramic valve includes a casing, a drive seat, a coupling seat, a rotary block and a fixed block sequentially mounted into the casing, wherein a braking shaft is pivotally connected to the drive seat and extends through a top of the casing. A pedestal is sealingly secured on a bottom of the casing for positioning the drive seat, the coupling seat, the rotary block and the fixed block. The rotary block is moved relative to the fixed block to guide cold water into the ceramic valve when the ceramic valve is in a middle section and the braking rod is operated to an inclined status.