Inline shower device

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Solution Overview

Problem

Existing dispensing devices for aromatic liquids in shower environments are prone to variable performance due to dependence on water supply pressure, leading to inconsistent dispense rates and user experiences.

Innovation Solution

An inline shower device with a hydraulic chamber and a fluid-driven piston, controlled by selectively applied fluid pressure, ensures consistent delivery of aromatic liquids into the inlet waterway, allowing for user-controlled dispensing and visual fluid level indication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing dispensing devices are used to introduce aromatic liquids into the shower waterway, then the device structure is simple, but the dispense rate varies considerably due to dependence on incoming water supply pressure

Engineering Contradiction:
Improvedispense rate consistencyVSAvoiddevice structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent employs a fluid-driven piston mechanism where water pressure acts on a piston to dispense aromatic liquid from a capsule. The piston is positioned within a chamber such that water flow activates it to push the aromatic liquid through a nozzle, converting hydraulic energy into controlled dispensing action while maintaining consistent dispense rates independent of supply pressure variations

Inventive Principle:
Principle #29Pneumatics and hydraulics

Solution Approach 2:

The invention changes the operational parameter from direct pressure-dependent dispensing to a regulated piston-driven dispensing system. By introducing a mechanical piston that responds to water pressure in a controlled manner, the system transforms variable water pressure into consistent dispensing parameters, ensuring reliable aromatic liquid release regardless of supply pressure fluctuations

Inventive Principle:
Principle #35Parameter changes

2Ease of operation

If the aromatic liquid is released immediately after shower activation, then the device operation is simple, but the user experience varies due to inability to control dispensing timing

Engineering Contradiction:
Improveuser controlVSAvoiddispensing timing flexibility
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The patent enables preliminary action by allowing the user to activate the dispensing mechanism at any desired moment during the shower, rather than forcing immediate release. The piston system can be triggered on-demand, giving users the flexibility to time the aromatic liquid release to their preference, whether at the start, middle, or end of the shower experience

Inventive Principle:
Principle #10Preliminary action

3Reliability

If the device depends on incoming supply pressure for performance, then the device structure is simple, but the overall user experience is inconsistent

Engineering Contradiction:
Improveuser experience consistencyVSAvoidpressure regulation mechanism
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent introduces a piston as an intermediary element between the water supply and the aromatic liquid dispensing system. This mediator converts variable water pressure into consistent mechanical motion, ensuring that the aromatic liquid is dispensed at a steady rate regardless of fluctuations in the incoming water supply pressure, thereby maintaining reliable user experience

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

The solution provides a consistent and user-controllable dispensing of aromatic liquids, enhancing the bathing experience by maintaining a stable dispense rate regardless of water supply pressure and allowing for flexible timing of fluid release.

Implementation Method 1

The fluid-driven piston is disposed within the hydraulic chamber and is configured to dispense a fluid from the capsule into the outlet port. A position of the fluid-driven piston is controlled by selectively applying fluid pressure to a first side and a second side of the fluid-driven piston.

Methodology Applied
Scientific EffectFluid pressure: Pressure Increase

Data Source

PatentEP3739132B1Inline shower device
Publication Date: 2022.11.02 KOHLER CO(US)
  • EP3739132B1 patent drawingFigure 1~2
  • EP3739132B1 patent drawingFigure 3~5
  • EP3739132B1 patent drawingFigure 6~8

AI summary

An inline shower device (100) includes a housing (102), a hydraulic chamber (304), a first actuator (200), and a fluid-driven piston (306). The housing (102) includes an outlet port (106). The hydraulic chamber (304) is disposed within the housing (102). The first actuator (200) is configured to connect a capsule (108) to the housing (102) and to fluidly connect the capsule (108) to the hydraulic chamber (304). The fluid-driven piston (306) is disposed within the hydraulic chamber (304) and is configured to dispense a fluid from the capsule (108) into the outlet port (106). A position of the fluid-driven piston (306) is controlled by selectively applying fluid pressure to a first side (323) and a second side (325) of the fluid-driven piston (306).