Nested Water Purifier Housing for Pressure and Water Hammer

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Solution Overview

Problem

Existing water purifier housings face challenges in withstanding long-term water pressure and water hammer while maintaining flexibility and transparency, leading to potential breakage and increased manufacturing costs due to the use of rigid transparent materials.

Innovation Solution

A housing design integrating an opaque and transparent housing body with complementary flexibility and rigidity, where the opaque body wraps around the transparent body, forming windows for visibility and reducing material costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If transparent materials are used to manufacture the housing, then users can observe the filter cartridge status, but the housing becomes prone to breakage under water pressure and water hammer

Engineering Contradiction:
Improvefilter status observationVSAvoidhousing durability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent employs a nested structure where an inner transparent housing (second housing) is placed inside an outer opaque housing (first housing). The transparent housing allows filter status observation, while the opaque housing provides structural strength and durability. This nested configuration resolves the contradiction by allowing each housing to fulfill its specific function without compromising the other.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent applies local quality by making only the necessary portions transparent (the inner housing for observation) while keeping the outer housing opaque for strength. This selective transparency ensures that the housing has the required durability in critical areas while maintaining observability where needed, thus resolving the contradiction between transparency and durability.

Inventive Principle:
Principle #3Local quality

2Ease of operation

If transparent materials are used to manufacture the housing, then users can observe the filter cartridge status, but the manufacturing cost increases due to material expense and thickness requirements

Engineering Contradiction:
Improvefilter status observationVSAvoidmanufacturing cost
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The nested housing structure allows the use of thinner transparent material for the inner housing since it only needs to provide observation capability, not structural support. The outer opaque housing bears the structural load, enabling the use of cost-effective materials. This resolves the cost contradiction by distributing functional requirements across two housings.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent applies local quality by making only the observation area transparent rather than the entire housing, reducing the amount of expensive transparent material required. The opaque housing uses cost-effective materials for the majority of the structure, thus lowering overall manufacturing costs while maintaining the essential observation function.

Inventive Principle:
Principle #3Local quality

3Reliability

If opaque materials are used to manufacture the housing, then the housing has good flexibility and durability, but users cannot observe the filter cartridge status

Engineering Contradiction:
Improvehousing durabilityVSAvoidfilter status observation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The nested configuration places a transparent inner housing within the opaque outer housing. This allows the opaque housing to maintain its durability and flexibility while the transparent inner housing provides the observation function, thus resolving the contradiction between opacity/durability and transparency/observability.

Inventive Principle:
Principle #7Nested doll (Nesting)

4Reliability

If the housing thickness is increased to withstand water pressure, then the housing durability improves, but the manufacturing cost increases significantly

Engineering Contradiction:
Improvehousing durabilityVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The nested housing structure distributes the structural load-bearing function to the outer opaque housing, allowing it to be thicker and more durable, while the inner transparent housing can be thinner since it only needs to provide observation capability. This resolves the contradiction by optimizing thickness distribution across the nested structures.

Inventive Principle:
Principle #7Nested doll (Nesting)

Data Source

PatentEP4620548A1Housing for water purifier
Publication Date: 2025.09.24 YUYAO YADONG PLASTIC
  • EP4620548A1 patent drawingFigure 1A
  • EP4620548A1 patent drawingFigure 1B~1C
  • EP4620548A1 patent drawingFigure 1D~1E

AI summary

Provided is a housing for a water purifier, which can withstand long-term water pressure and water hammer caused by changes in water pressure, and has a low manufacturing cost.