Dishwasher Spray Arm Connection Ring for Pressure Loss Reduction

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional dishwasher water spraying apparatuses have low space utilization and unnecessary pressure relief surfaces, limiting effective loading space and water pressure relief volume, which affects washing performance, noise, and water consumption.

Innovation Solution

A water spraying apparatus with a connecting device featuring first and second semicircular fitting rings that snap-fit to form a connecting ring, allowing the water source connecting pipe to be fitted within the spraying arm's inlet tube, reducing pressure relief surfaces and improving water utilization, while enabling rotation and efficient connection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a snapping tongue or nut is used to connect the spraying arm with the water source device, then the connection can be assembled, but the space utilization of the dishwasher is low and unnecessary pressure relief surfaces are created

Engineering Contradiction:

Improveconnection reliabilityVSAvoidspace utilization

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

The connecting pipe is inserted into and nested within the water inlet tube, with the connecting ring positioned between them axially. This nested arrangement eliminates the need for external connecting components, maximizes space utilization, and removes unnecessary pressure relief surfaces while maintaining reliable connection through the snap-fit mechanism of the semicircular fitting rings

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The connecting device merges the connecting pipe and water inlet tube into a single integrated connection structure. The first and second semicircular fitting rings combine to form a complete connecting ring that secures both components together, eliminating the need for separate connecting elements and reducing overall space requirements

Inventive Principle:

Principle #5Merging (Combining)

2Ease of manufacture

If a snapping tongue or nut is used to connect the spraying arm with the water source device, then the connection can be assembled, but two pressure relief surfaces are created causing unnecessary pressure relief

Engineering Contradiction:

Improveassembly easeVSAvoidwater pressure relief

Core Design Contradiction:

Ease of manufactureVSLoss of energy

Solution Approach 1:

The invention extracts and eliminates the unnecessary pressure relief surfaces created by traditional connecting devices. By using a nested connecting ring structure, the design removes the extraneous interfaces between components that generate pressure relief, thereby reducing energy loss while maintaining easy assembly through the snap-fit mechanism

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention converts the potential harm of pressure relief loss into a benefit by designing a connection structure that minimizes pressure relief surfaces. The nested arranging of the connecting pipe within the water inlet tube, secured by the connecting ring, transforms what would be multiple pressure relief interfaces into a streamlined single interface, reducing water pressure relief and improving energy efficiency

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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

This design enhances water current utilization, reduces unnecessary pressure relief, and increases effective loading space in dishwashers, improving washing performance and space utilization while maintaining a reliable and simple connection.

Implementation Method 1

first and second semicircular fitting rings which are adapted to snap-fit with each other to form a connecting ring

Methodology Applied

Scientific EffectSnap-fit mechanism: Mechanical Fastener

Implementation Method 2

the connecting ring is rotatably fitted over the water outlet tube of the water source connecting pipe

Methodology Applied

Scientific EffectRotational fitting:

Implementation Method 3

the water source connecting pipe is fitted within the water inlet tube of the spraying arm to avoid resulting in unnecessary pressure relief surfaces, reduce the water current pressure relief volume

Methodology Applied

Scientific EffectPressure reduction: Pressure Drop

Data Source

PatentUS9516988B2Water spraying apparatus of dishwasher and dishwasher comprising the same

Publication Date: 2016.12.13 FOSHAN SHUNDE MIDEA WASHING APPLIANCES MANUFACTURING CO LTD

AI summary

A water spraying apparatus of a dishwasher and the dishwasher comprising the water spraying apparatus are provided. The water spraying apparatus comprises a water source connecting pipe having a water outlet tube, a spraying arm having a water inlet tube, and a connecting device connecting the water source connecting pipe with the spraying arm, in which the connecting device comprises first and second semicircular fitting rings which are adapted to snap-fit with each other to form a connecting ring, the connecting ring is rotatably fitted over the water outlet tube of the water source connecting pipe and positioned in an axial direction of the connecting ring between the water inlet tube of the spraying arm and the water outlet tube of the water source connecting pipe.