Replaceable Flush Valve Cartridge for Tankless Fixtures
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Solution Overview
Problem
Conventional flush valves are complex to manufacture, difficult to assemble and maintain, and require specialized skills and tools, leading to high labor and downtime costs due to their intricate design and variability across manufacturers.
Innovation Solution
A replaceable flush valve system with a self-contained cartridge that can be easily installed and removed without the need for complex precision machining or specialized tools, featuring a valve housing with a gate mechanism that controls water flow and includes an electro-mechanical switch or mechanical plunger for operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional flush valves use integrally designed valve bodies with precision-machined components, then manufacturing precision and reliability are improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The flush valve system is divided into a permanent valve housing and a replaceable flush valve module. The module contains all moving parts, seals, and internal components that wear during operation, separating them from the stationary housing. This segmentation allows the housing to be simple and durable while the module can be optimized for reliability and replaced when worn.
Solution Approach 2:
The complex, wear-prone components are extracted into a separate replaceable module that can be removed and replaced without affecting the permanent valve housing. This extraction allows the housing to maintain simplicity while the module concentrates all the complexity and wear elements in one serviceable unit.
2Adaptability or versatility
If conventional flush valves have multiple integrated components, then functionality is improved, but ease of repair and maintenance difficulty increase
Solution Approach 1:
All functional components are segmented into a single replaceable module that maintains full flush valve functionality. The module includes piston, seals, springs, and internal passages, allowing the entire functional assembly to be replaced as one unit without diagnostic complexity or specialized tools.
Solution Approach 2:
The flush valve module is designed as a disposable or easily replaceable unit with a service life of several years. When worn, the entire module is replaced rather than repaired, eliminating maintenance complexity. The simple replacement process requires no plumbing skills, special tools, or diagnostic procedures.
3Manufacturing precision
If conventional flush valves require component-level diagnosis and replacement, then manufacturing precision is improved, but loss of time and productivity decrease
Solution Approach 1:
Multiple precision-manufactured components (piston, seals, springs, internal passages) are merged into a single pre-assembled module that maintains manufacturing precision through factory assembly. The module is designed to be replaced as one unit, eliminating the time-consuming process of diagnosing and replacing individual components in the field.
Solution Approach 2:
The flush valve module is pre-assembled and pre-tested at the factory with all components precisely positioned and sealed. This preliminary assembly ensures manufacturing precision is achieved during controlled factory conditions rather than during field installation, and allows rapid replacement without requiring precision work at the installation site.
4Reliability
If conventional flush valves are designed as single integrated units, then reliability is improved, but ease of manufacture and assembly difficulty increase
Solution Approach 1:
The system is segmented into two main parts: a permanent valve housing and a replaceable flush valve module. The housing is simple to manufacture with basic water inlet/outlet connections, while the module contains all complex internal components. This segmentation allows each part to be manufactured and tested independently, then assembled through a simple insertion process.
Solution Approach 2:
The replaceable module is designed as a universal unit that can be installed in different valve housings using standardized connection interfaces. The module contains all necessary components (piston, seals, springs, internal passages) to provide complete flush valve functionality, making it multi-functional and adaptable to various installation locations.
Data Source
AI summary
The present invention discloses an electronic flush valve system for tankless water fixtures, comprising a valve housing and a replaceable flush valve module removably secured within the valve housing. The flush valve module is comprised of an independent, self-contained flush valve configured as a replaceable flush valve cartridge.