Aerated Shower Nozzle Layout for Uniform Bubble Discharge

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Solution Overview

Problem

Conventional shower apparatuses fail to provide a comfortable, voluminous feel akin to being showered by large raindrops, as they discharge nonuniform water droplets due to varying bubble diameters in bubbly water, making it difficult to maintain uniform bubble sizes and achieve a consistent shower experience.

Innovation Solution

A shower apparatus design featuring a water supply unit, a throttle unit that reduces the flow channel's cross-sectional area, an aeration unit with an opening to produce bubbly water, and a nozzle unit with strategically placed nozzle holes, where the virtual water ejection line reaches the nozzle holes without interference, ensuring uniform bubble diameters and stable discharge through all nozzles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If water is aerated before being distributed to nozzle holes, then bubbly water is produced, but bubble diameters become nonuniform causing inconsistent shower feel

Engineering Contradiction:
Improvebubbly water productionVSAvoidbubble diameter uniformity
Core Design Contradiction:
Quantity of substanceVSManufacturing precision

Solution Approach 1:

The aeration unit divides the water flow into multiple streams that pass through separate aeration zones, allowing more uniform bubble formation in each stream before recombination. This segmentation prevents excessive bubble size variation that would occur in a single large aeration chamber.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different regions of the aeration unit provide different aeration conditions - the first aeration zone creates initial bubbles while the second aeration zone refines bubble size uniformity. This local differentiation of aeration quality ensures consistent bubble diameters throughout the bubbly water output.

Inventive Principle:
Principle #3Local quality

2Area of stationary object

If turbulence generation/expansion unit is placed in water flow path, then water spreads over entire front face, but bubble diameters become nonuniform

Engineering Contradiction:
Improvewater distribution coverageVSAvoidbubble diameter uniformity
Core Design Contradiction:
Area of stationary objectVSManufacturing precision

Solution Approach 1:

The turbulence generation unit is divided into multiple segments arranged in parallel, each creating controlled turbulence for its portion of the water flow. This segmentation allows water to spread across the entire front face while maintaining more uniform bubble diameters compared to a single large turbulence unit.

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If water changes direction by hitting threaded member and inner walls, then bubbly water is distributed, but bubble diameters become nonuniform

Engineering Contradiction:
Improvewater distributionVSAvoidbubble diameter uniformity
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The threaded member and inner wall collision mechanisms are removed from the system. Instead, a streamlined nozzle unit directly distributes the bubbly water without requiring direction changes through collisions, thereby maintaining bubble diameter uniformity while achieving effective water distribution.

Inventive Principle:
Principle #2Taking out (Extraction)

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 apparatus ensures that bubbly water with uniformly sized air bubbles is discharged, resulting in a consistent, voluminous shower experience with large, uniform water droplets, enhancing user comfort and shower quality.

Implementation Method 1

a throttle unit (22) installed downstream of the water supply unit (21) and making a cross sectional area of a flow channel smaller than the water supply unit (21) to eject passing water downstream

Methodology Applied
Scientific EffectVenturi effect: Venturi Effect

Implementation Method 2

an aeration unit (23) installed downstream of the throttle unit (22) and provided with an opening (231) to produce the bubbly water by aerating the water ejected through the throttle unit (22)

Methodology Applied
Scientific EffectAeration: Aeration

Data Source

PatentUS9220376B2Shower apparatus
Publication Date: 2015.12.29 TOTO LTD
  • US9220376B2 patent drawing
  • US9220376B2 patent drawing
  • US9220376B2 patent drawing

AI summary

A shower apparatus F1 includes a water supply unit 21; a throttle unit 22 installed downstream of the water supply unit 21 and adapted to eject passing water downstream; an aeration unit 23 provided with an opening 231 adapted to produce bubbly water by aerating the water ejected through the throttle unit 22; and a nozzle unit 24 provided with a plurality of nozzle holes 243 adapted to discharge the bubbly water, wherein a virtual water ejection straight line obtained by extending an ejection direction of the water ejected through the throttle unit 22 reaches a location where the nozzle holes 243 are formed, without interfering with inner walls of the aeration unit 23 and the nozzle unit 24.