Countertop Water Filter Lid Assembly with RFID Authentication

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Solution Overview

Problem

Existing countertop water filtration systems lack user-friendly features for easy filter cartridge replacement and advanced technologies for tracking filter usage and preventing non-branded or spent filter usage, as well as communicating usage data to a central location.

Innovation Solution

A countertop water filtration system with a housing for a pressure vessel, a ring enclosure, an interface tower, and a lid assembly that includes a pressure cap and rotatable lever for easy pressure release, along with RFID technology for authenticating filters and wireless communication for data transmission to a central location, ensuring proper filter usage and providing operational suggestions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a traditional water filtration system is used, then the system structure is simple, but the filter cartridge replacement is difficult and time-consuming

Engineering Contradiction:
Improvefilter cartridge replacementVSAvoidsystem structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The system is divided into modular components: a removable lid assembly, a pressure vessel containing the filter cartridge, and a base unit. This segmentation allows the filter cartridge to be easily accessed and replaced by simply removing the lid assembly, eliminating the need to disassemble the entire system while maintaining structural simplicity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The lid assembly incorporates a rotatable lever that transitions between locked and unlocked positions, dynamically changing the attachment state between the lid and pressure vessel. This dynamic mechanism enables quick filter cartridge replacement through a simple lever rotation action, significantly improving ease of operation without adding complex permanent structures.

Inventive Principle:
Principle #15Dynamics

2Reliability

If RFID technology is added for filter authentication, then non-branded or spent filter usage is prevented, but the device complexity increases

Engineering Contradiction:
Improvefilter usage controlVSAvoidsystem structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces manual filter verification methods with RFID (radio frequency identification) technology. An RFID tag on the filter cartridge communicates wirelessly with a reader in the system, automatically authenticating the filter's validity and brand status. This electronic substitution eliminates the need for physical inspection or manual coding systems, achieving reliable filter control while minimizing mechanical complexity.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The RFID tag acts as an intermediary carrier of authentication information between the filter cartridge and the system's control mechanism. This intermediary enables reliable identification and validation of filters without requiring direct mechanical or electrical connections, thus preventing spent or non-branded filter usage while keeping the system structure relatively simple.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Loss of information

If wireless communication technology is integrated for data transmission, then usage data can be communicated to a central location, but the device complexity and cost increase

Engineering Contradiction:
Improveusage data communicationVSAvoidsystem structure
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The patent replaces physical data storage and manual data retrieval methods with wireless communication technology (such as Wi-Fi). The system automatically transmits usage data, filter status, and system diagnostics wirelessly to a central location or mobile device, eliminating the need for physical data logs, USB connections, or manual data entry mechanisms.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system performs self-service data communication by automatically collecting, processing, and transmitting usage information without requiring user intervention. The wireless communication module operates autonomously to send data to remote servers or user devices, reducing the need for complex manual data management systems while maintaining information integrity.

Inventive Principle:
Principle #25Self-service

4Reliability

If a locking system is added to prevent misaligned lid attachment, then the system reliability improves, but the ease of operation decreases

Engineering Contradiction:
Improvelid attachment alignmentVSAvoidlid assembly attachment
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The locking system employs asymmetric features on the lid assembly and pressure vessel that only align in the correct orientation. These asymmetric elements guide the lid into proper alignment during attachment and engage the locking mechanism only when correctly positioned, preventing misaligned attachment while maintaining a simple snap-fit operation that does not require complex alignment procedures.

Inventive Principle:
Principle #4Asymmetry

Data Source

PatentUS9815725B2Self-contained water filtration system and method of using the same
Publication Date: 2017.11.14 MULTIPURE INT
  • US9815725B2 patent drawing
  • US9815725B2 patent drawing
  • US9815725B2 patent drawing

AI summary

A water filtration housing containing a pressure vessel configured to receive a water filter cartridge; a ring enclosure attachable to an open, top end of the housing enclosure; an interface tower including a user interface; a lid assembly removably attachable to the ring enclosure, the lid assembly including (i) a pressure cap and gasket for maintaining a given pressure in said pressure vessel and (ii) a rotatable lever for disengaging the pressure cap from the pressure vessel thereby releasing pressure therein. A mating system between the lid assembly and ring enclosure prevents the lid assembly from being attached to the ring enclosure in a misaligned fashion. RFID technology may be used for identifying the water filter cartridge installed therein and wireless communication technology (e.g., Wi-Fi) to transmit collected system data (e.g., water usage) to a central location for analysis such that the customer is provided with, for example, operational suggestions.