Interchangeable Jet Disc Shower Head for Pattern Variety

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Solution Overview

Problem

Existing shower assemblies lack the ability to provide a wide range of jet exit characteristics with minimal structural complexity and maintenance effort.

Innovation Solution

A shower assembly featuring a shower head housing with a distributor plate and multiple interchangeable jet discs, each with unique chamber-forming and fluid-blocking structures, allowing for various spray patterns by selecting the appropriate jet disc and using a switching valve to control fluid flow paths.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple separate shower heads are used to provide different jet exit characteristics, then jet pattern variety is improved, but device complexity and space requirements worsen

Engineering Contradiction:
Improvejet pattern varietyVSAvoidnumber of shower heads
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The distributor plate is segmented into multiple fluid guide paths (first, second, third fluid guide paths) that are spatially separated but integrated within a single shower head housing. Each fluid guide path can be independently controlled by switching valves to deliver different jet patterns through the jet disc, eliminating the need for multiple separate shower heads while maintaining pattern variety.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A single shower head housing with a multi-functional distributor plate is designed to perform the functions of multiple separate shower heads. The distributor plate integrates multiple fluid guide paths and switching valves that can selectively activate different jet patterns (first jet pattern, second jet pattern, third jet pattern) through one jet disc, making the system universal and eliminating the need for multiple dedicated shower heads.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple jet discs are permanently integrated into the shower head housing, then jet pattern variety is improved, but ease of maintenance and replacement worsens

Engineering Contradiction:
Improvejet pattern varietyVSAvoiddisc replacement
Core Design Contradiction:
Adaptability or versatilityVSEase of repair

Solution Approach 1:

The jet disc is designed with dynamic, reversible attachment means (such as bayonet mounting or snap-fit mechanisms) that allow it to be quickly attached and detached from the distributor plate. This dynamic connection enables users to easily replace jet discs to change jet patterns or replace malfunctioning discs, transforming a static permanent integration into a flexible, maintainable system.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The jet disc is separated from the shower head housing as an independent, interchangeable component rather than being permanently integrated. This segmentation allows the jet disc to be removed and replaced separately from the distributor plate and housing, significantly improving maintenance ease while preserving the ability to offer multiple jet patterns through different disc options.

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If a complex switching valve system is used to control multiple fluid guide paths, then jet pattern controllability is improved, but device complexity worsens

Engineering Contradiction:
Improvejet pattern switchingVSAvoidvalve system complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

Multiple switching valves (first switching valve, second switching valve, third switching valve) are merged into a single integrated valve block or cartridge assembly that is pre-assembled with the distributor plate. This merging consolidates the control system into one compact unit, reducing the number of separate components and simplifying installation and maintenance while maintaining the ability to control multiple fluid guide paths independently.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The switching valves and distributor plate are pre-assembled as an integrated cartridge unit before installation in the shower head housing. This preliminary assembly ensures proper alignment and connection of the valve system with the fluid guide paths, reducing on-site installation complexity and ensuring reliable operation of the jet pattern switching mechanism.

Inventive Principle:
Principle #10Preliminary action

4Adaptability or versatility

If multiple fluid guide paths are formed in the shower head housing, then jet pattern diversity is improved, but manufacturing complexity worsens

Engineering Contradiction:
Improvejet pattern diversityVSAvoidhousing complexity
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The distributor plate is segmented into distinct fluid guide paths with individual passage openings for each path. This segmentation allows each fluid guide path to be independently designed and manufactured, then assembled together on the distributor plate, reducing the complexity of manufacturing the entire housing as a single complex piece while enabling diverse jet patterns.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The distributor plate serves as an intermediary component between the shower head housing and the jet disc, carrying multiple fluid guide paths within its structure. This intermediary design concentrates the complexity in a removable, replaceable distributor plate rather than in the permanent housing, making the housing simpler to manufacture while still enabling multiple fluid guide paths for diverse jet patterns.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP3074139B1Shower assembly with shower head housing
Publication Date: 2019.09.18 HANS GROHE GMBH & CO KG
  • EP3074139B1 patent drawingFigure 1~3
  • EP3074139B1 patent drawingFigure 4~6
  • EP3074139B1 patent drawingFigure 7~12

AI summary

The invention relates to a shower assembly which comprises a shower head housing (2) with a fluid inlet (6) and a distributor plate (8a) in the shower head housing, wherein a multiplicity of separate fluid-guiding paths (9a, 9b, 9c) is formed and the distributor plate has passage openings extending from the fluid-guiding paths. According to the invention, the shower assembly comprises a multiplicity of jet disks which, on the inner side, have different chamber-forming and/or or fluid-blocking structures (23) and which can be selectively mounted on the distributor plate and have in each case one or more jet outlet openings (16). In this case, the chamber-forming structure of a respectively mounted jet disk forms, between distributor plate and jet disk, a jet disk-specific outlet chamber structure into which the passage openings issue. In addition or alternatively, the fluid-blocking structure of a respectively mounted jet disk forms, between distributor plate and jet disk, a jet disk-specific fluid-blocking structure which blocks at least one of the fluid-guiding paths.