Mixing Cartridge Temperature Limit Assembly
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Solution Overview
Problem
Existing mixing cartridges lack user-adjustable temperature settings below the maximum temperature limit, which can be uncomfortable for end users, and do not allow for flexible temperature adjustments based on application-specific needs.
Innovation Solution
An adjustment and temperature limit assembly for mixing cartridges, comprising a first piece attached to the housing with a maximum temperature limit abutment and a second piece mounted on a rotating stem, allowing selective movement between multiple temperature limits, including a fixing element to set a reduced maximum temperature or fix an operating temperature at one of the limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mixing cartridge is configured to set a maximum temperature output level to meet safety standards, then scalding hot water is avoided, but end user comfort and flexibility are reduced
Solution Approach 1:
The patent applies the Dynamics principle by making the temperature limit adjustable rather than fixed. The cartridge allows dynamic reconfiguration of the temperature limiting mechanism through replaceable limiters or adjustable mechanisms, enabling the maximum temperature output to be changed based on user preferences and application requirements while maintaining safety standards compliance.
Solution Approach 2:
The patent implements Parameter changes by allowing modification of the temperature parameter through different configurable settings. The system provides multiple temperature limit options (e.g., 100°F, 110°F, 120°F) that can be selected based on specific needs, thereby changing the operational parameter of maximum temperature output to balance safety compliance with user comfort and flexibility.
2Reliability
If the mixing cartridge is configured to set a fixed maximum temperature output level, then safety standards are met, but user preference for lower temperatures cannot be accommodated
Solution Approach 1:
The system transitions from a static fixed temperature limit to a dynamic adjustable limit. Users can operationally adjust the maximum temperature output within safe parameters to match their comfort preferences, making the system adaptable to individual needs while preserving safety through predefined acceptable ranges.
Solution Approach 2:
The temperature control range is segmented into multiple discrete selectable levels (e.g., 100°F, 110°F, 120°F). This segmentation allows users to choose the appropriate temperature level for their comfort while ensuring all options remain within safety standards, thereby improving ease of operation without compromising temperature safety.
3Adaptability or versatility
If the mixing cartridge allows temperature adjustment below the maximum limit, then user comfort is improved, but device complexity increases
Solution Approach 1:
The temperature adjustment capability is implemented through segmented, discrete temperature levels rather than continuous adjustment. This approach provides multiple temperature options for user comfort while avoiding the complexity of fine-tuned continuous control mechanisms. The segmented design allows simple selection among predefined safe temperature points.
Solution Approach 2:
The patent employs replaceable temperature limiters or simple adjustment components that can be easily changed or replaced. This approach provides adaptability through multiple temperature options while keeping the adjustment mechanism simple and cost-effective, avoiding complex electronic or precision mechanical control systems.
Data Source
AI summary
An adjustment and temperature limit assembly for a mixing cartridge includes a first piece and a second piece selectively moveable relative to the first piece. The first piece is configured to be attached to a mixing cartridge housing and includes an abutment defining a maximum temperature limit for water exiting the mixing cartridge. The second piece is configured for attachment to a rotating stem extending outwardly of the housing. The second piece is selectively movable relative to the first piece between a plurality of temperature limits that are less than or equal to the maximum temperature limit. A fixing element is configured to be selectively attached to at least one of the first and second pieces to fix an operating temperature at one of the plurality of temperature limits or to set a reduced maximum temperature limit that is less than the maximum temperature limit.