Faucet Switching Valve Assembly Using Water Pressure Control

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional faucet shower-driver knobs fail to prevent unintentional water spraying, which can scare or burn users, and result in water wastage due to continuous water flow during operation and accidental switching.

Innovation Solution

A manually operated switch with a switching valve assembly that uses water pressure to control the flow, keeping the valve closed until pressure is released, ensuring safe and efficient water dispensing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the shower-driver knob is used to control water flow, then water can be dispensed from the shower head, but water may spray unintentionally from the shower head within 90 seconds after turning on the faucet, causing user scalding or scaring

Engineering Contradiction:

ImprovesafetyVSAvoidwater spraying

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces an intermediate control mechanism between the user and the shower head water flow. The switching valve assembly acts as a mediator that controls whether water can reach the shower head, preventing direct unintended spraying while still allowing controlled water dispensing when needed.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The switching valve assembly is designed to be activated before water flow is established to the shower head. By requiring preliminary activation of the switching valve, the system ensures that water flow is controlled in advance, preventing sudden unintended spraying that could scald or scare users.

Inventive Principle:

Principle #10Preliminary action

2Ease of operation

If the shower-driver knob is operated during transiting between positions, then water flow can be switched between shower head and exhaust, but water is continuously exhausted from the body causing water waste

Engineering Contradiction:

Improveswitching controlVSAvoidwater waste

Core Design Contradiction:

Ease of operationVSLoss of substance

Solution Approach 1:

The patent extracts the water waste problem by separating the exhaust function from the main water flow path. The switching valve assembly directs water flow exclusively to either the shower head or the exhaust outlet, preventing continuous water exhaustion during transitions and eliminating unnecessary water waste.

Inventive Principle:

Principle #2Taking out (Extraction)

3Device complexity

If the shower-driver knob and handle are closed to each other, then space is saved, but the user may accidentally switch the shower-driver knob or handle causing unintentional water exhaustion or shower head water flow

Engineering Contradiction:

Improvecomponent arrangementVSAvoidaccidental water flow

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The switching valve assembly serves as an intermediary safety mechanism between the handle and the water flow control. Even though the shower-driver knob and handle remain close together, the switching valve assembly prevents accidental water flow by requiring deliberate activation, thus maintaining compact design while eliminating harmful accidental switching.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Extent of automation

If the switching valve assembly uses water pressure to remain closed, then water flow control is automated, but the valve must be reliably opened when water pressure is applied

Engineering Contradiction:

Improvepressure-controlled valve operationVSAvoidvalve opening reliability

Core Design Contradiction:

Extent of automationVSReliability

Solution Approach 1:

The patent replaces complex mechanical valve actuation systems with a pressure-based automatic control mechanism. The switching valve assembly uses water pressure itself to trigger the opening action, eliminating the need for additional mechanical actuators while ensuring reliable operation through the natural force of the water flow.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

Prevents user scalding and water wastage by ensuring water is only sprayed when intended, maintaining safety and reducing unnecessary water usage.

Implementation Method 1

When the switching valve assembly closes the flowing way of the inner pipe, the water pressure will keep the switching valve assembly closed

Methodology Applied

Scientific EffectWater pressure: Pressure Increase

Data Source

PatentUS7258322B1Manually operated switch for a faucet

Publication Date: 2007.08.21 OU PI SHENG CO LTD

AI summary

A manually operated switch for a faucet has a body, an inner pipe, a switching valve assembly. The body is hollow. The inner pipe is located inside of the body and has a flowing way. The flowing way is formed through the inner pipe. The switching valve assembly is slidably mounted inside of the flowing way of the inner pipe and extends out the body. When the switching valve assembly closes the flowing way of the inner pipe, the water pressure will keep the switching valve assembly closed. After the water pressure applied to the switching valve assembly is released or dismissed, the switching valve assembly returns back to an original position so that the flowing way is opened. The opening and closing flowing way can manually control the way of water flowing so that a user may not be scared or burned by the water.