Three-way valve drivable by a pump
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Solution Overview
Problem
Existing hydraulic systems for heating and domestic hot water installations rely on motorized three-way valves that require electricity, which increases costs and complexity, and do not effectively manage hydraulic performance and water hammering.
Innovation Solution
A non-motorized three-way valve operated by hydraulic energy, featuring a movable support and obstructing members that change shape in response to pump pressure, allowing fluid communication between ports without electricity, and utilizing elastic return means to bias the support towards an intermediate position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If motorized three-way valves are used to direct water to heat exchangers, then the valve switching function is achieved, but electricity is required for operation which increases costs and complexity
Solution Approach 1:
The patent replaces motorized actuation with a purely hydraulic actuation system. The pump itself generates the pressure variations that directly drive the valve switching mechanism through hydraulic connections, eliminating the need for motors, electrical controls, and associated complexity while maintaining the valve switching function.
Solution Approach 2:
The system uses the pump's own operational cycles (on/off states) to automatically control the valve positioning. The valve responds to pressure changes generated by the pump without requiring external control signals or additional energy input, making the system self-regulating and eliminating electrical dependency.
2Reliability
If motorized valves are used for distributing fluid flows, then precise control is achieved, but electrical components increase operational costs and reduce reliability
Solution Approach 1:
The patent employs hydraulic pressure variations from the pump to actuate the valve mechanism. The pressure differential generated during pump on/off cycles directly moves the valve components, replacing electrical actuation with a hydraulic system that is inherently more reliable and eliminates continuous electrical energy consumption.
3Productivity
If conventional hydraulic systems are used, then fluid distribution is achieved, but water hammering occurs and hydraulic performance is compromised
Solution Approach 1:
The patent utilizes the dynamic pressure variations naturally occurring during pump on/off cycles to control valve switching. By synchronizing valve actuation with the pump's operational dynamics, the system achieves smooth fluid distribution transitions that prevent water hammering while maintaining high productivity.
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 solution provides a simple, reliable, and cost-effective hydraulic system that reduces electrical costs, improves hydraulic performance, and prevents water hammering by using hydraulic energy alone to direct water between circuits.
Implementation Method 1
at least one of which is responsive to the pressure applied by the pump at the first port
Implementation Method 2
return means associated with the movable support, which produce an elastic force to bias the movable support towards an intermediate position
Data Source
AI summary
Three-way valve drivable by a pump, switchable between at least two switch positions wherein a first port is selectively in fluid communication with a second port or with a third port. The three-way valve comprises a movable support and a pair of obstructing members carried by the movable support, at least one of which is responsive to the pressure applied by the pump at the first port, at least one of the movable support and obstructing members being movable due to transitions between an off-state and an on-state of the circulation pump. The obstructing members are adapted to engage reciprocatingly the respective seats of the three-way valve. The obstructing members are capable of changing shape synchronously when the pump switches from the off-state to the on-state.