Compact Bypass Ball Valve Assembly for Tankless Heater Flushing
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Solution Overview
Problem
Tankless water heaters require frequent draining and flushing to prevent scale buildup due to their small liquid volume, and existing valve systems are expensive and occupy significant space, making them unsuitable for compact installations.
Innovation Solution
A compact valve assembly with a ball valve design that replaces multiple valves, featuring a valve body with two sections, a spherical ball element, and an elongate spindle for rotation between open and bypass positions, allowing for efficient fluid flow and reduced space occupancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate valves are used for controlling fluid flow in tankless water heater, then reliable fluid control is achieved, but device complexity and space occupation increase
Solution Approach 1:
The patent combines multiple valve functions into a single integrated valve body that houses multiple ball valves within one structure. This merging approach reduces the number of separate valve components while maintaining the reliability of fluid control through multiple independent valve elements, directly resolving the contradiction between reliability and device complexity
Solution Approach 2:
The valve assembly is designed as a multi-functional unit that can perform multiple valve operations (opening, closing, bypass routing) through a single integrated structure. This universal design allows one valve assembly to replace what would traditionally require multiple separate valves, reducing complexity while preserving functional reliability
2Reliability
If multiple separate valves are used for controlling fluid flow in tankless water heater, then reliable fluid control is achieved, but space occupation increases
Solution Approach 1:
By merging multiple valve functions into a single compact valve body, the patent significantly reduces the space required for valve installation. The integrated design allows multiple ball valves to share common structural elements, reducing the overall footprint while maintaining reliable fluid control
Solution Approach 2:
The valve assembly employs a nested structure where multiple ball valves are housed within a single valve body structure. This nesting approach allows compact arrangement of multiple valve elements, reducing the total space occupation while preserving the reliability benefits of having multiple independent valve controls
3Reliability
If traditional valve systems are used, then adequate fluid control is provided, but manufacturing cost increases
Solution Approach 1:
The patent reduces manufacturing costs by merging multiple valve functions into a single integrated assembly. This approach reduces the total number of separate components that need to be manufactured, inventoried, and assembled, while maintaining adequate fluid control capability through the multi-functional valve design
Solution Approach 2:
The universal valve assembly design provides adequate fluid control for multiple functions within a single standardized component. This multi-functionality reduces the need for multiple specialized valve types, simplifying manufacturing processes and reducing overall system cost while maintaining necessary control capabilities
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
The compact valve assembly reduces the number of parts and space required, making it cost-effective and suitable for tight spaces while maintaining efficient operation for flushing and scale removal in tankless water heaters.
Implementation Method 1
A spherical ball element is provided for rotation about a vertical axis and having a primary elongate passage extending completely therethrough along a horizontal axis perpendicular to the axis of rotation
Data Source
AI summary
A valve assembly is provided having two valve sections, each having a tubular passageway portion and when joined together, defining a ball cavity in communication with the tubular passageways. One of the body sections is provided with an inlet/outlet in communication with the ball cavity as well as a spindle flange. An elongate spindle extends through the spindle flange projecting into the ball cavity region to rotate a spherical ball element between an open and a bypass position. The ball valve has a primary elongate passage which interconnects the two tubular passage portions in the valve body sections when the ball valve is in the open position. When the ball valve is rotated to the bypass position, the tubular passage portion of one of the ball body sections is sealed closed while the other tubular passage portion communicates with an internal bypass port within the ball valve which in turn, communicates with the auxiliary inlet/outlet. The preferred embodiment includes a pair of valve assemblies for use with a tankless hot water heater system.