Dishwasher Spray Distributor for Long-Lasting Odor Control

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Solution Overview

Problem

Existing dishwashers face challenges in providing long-lasting and rapid elimination of bad smells within the washing chamber, as conventional deodorants lose efficiency over time and do not offer a permanent solution.

Innovation Solution

A dishwasher equipped with a spray distributor system that includes a pressurized vessel containing a deodorant or chemical substance, which is atomized and released into the washing chamber via a spray head activated by an actuator, either manually or through a control unit at the end of the washing cycle.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If conventional deodorant tablets are used in the dishwasher, then bad smells are temporarily suppressed, but the deodorant efficiency decreases over time and cannot provide long-lasting effect

Engineering Contradiction:
Improveduration of deodorant effectVSAvoiddeodorant efficiency
Core Design Contradiction:
Duration of action of moving objectVSReliability

Solution Approach 1:

The deodorant is applied dynamically through a spray device that releases the deodorant substance on demand rather than relying on passive, gradual release from tablets. The spray device can be activated at specific moments (e.g., end of washing cycle) to refresh the deodorant effect, ensuring consistent performance over time.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The deodorant is transformed from a solid tablet form to a sprayable form (liquid, aerosol, or foam) that can be evenly distributed throughout the washing chamber. This parameter change in physical state enables more effective and uniform coverage, extending the duration and reliability of the deodorant effect.

Inventive Principle:
Principle #35Parameter changes

2Object-affected harmful factors

If deodorant components are added to dishwasher detergent, then bad smells are eliminated during washing, but the effect is not permanent and cannot prevent smells after washing

Engineering Contradiction:
Improvebad smell eliminationVSAvoidlong-lasting hygiene effect
Core Design Contradiction:
Object-affected harmful factorsVSDuration of action of stationary object

Solution Approach 1:

The spray device applies deodorant substance as a preliminary action after the washing cycle completes, preparing the washing chamber environment for odor prevention. This timing ensures that the deodorant is applied when the chamber is ready to be sealed, maximizing the long-lasting effect.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system maintains continuous odor protection by combining detergent deodorant components during washing with post-wash spray application. This continuous action ensures uninterrupted hygiene protection throughout the entire dishwasher operation cycle.

Inventive Principle:
Principle #20Continuity of useful action

3Productivity

If a spray device is introduced to distribute deodorant, then rapid and efficient odor elimination is achieved, but the device complexity increases

Engineering Contradiction:
Improvespeed of deodorant distributionVSAvoidspray distributor structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The spray device is designed to serve multiple functions: distributing deodorant substance, creating aerosol/foam patterns for even coverage, and potentially integrating with existing dishwasher spray arm systems. This multi-functionality achieves rapid deodorant distribution without proportionally increasing overall system complexity.

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

Solution Approach 2:

A pressurized vessel acts as an intermediary component that stores and delivers the deodorant substance to the spray head. This mediator simplifies the overall system by consolidating storage, pressurization, and delivery functions in a single integrated component rather than requiring multiple separate systems.

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

Effectively eliminates bad smells within the washing chamber for a prolonged duration by ensuring timely and efficient distribution of deodorant or hygiene-enhancing substances, enhancing the overall hygiene and odor control.

Implementation Method 1

the container of the spray distributor is in the form of a pressurized vessel which is assembled to the spray head

Methodology Applied
Scientific EffectPressure: Pressure Increase

Implementation Method 2

the pressurized vessel essentially comprises a deodorant substance which can be atomized

Methodology Applied
Scientific EffectAtomization: Aerosol

Data Source

PatentEP2529657B1A dishwasher with spray device
Publication Date: 2015.08.26 BSH HAUSGERATE GMBH
  • EP2529657B1 patent drawingFigure 1~2

AI summary

The present invention is a dishwasher comprising a door (20); and a washing housing (10) with a washing chamber (12) to which the door (20) is hinged in a sealed and hinged manner. The dishwasher comprises a spray distributor (30) which has at least one spray head (35) which is positioned in the washing housing (12) and which is adjusted so as to distribute the item, existing inside a container (33) thereof, to the washing chamber (12).