Rotatable Coolant Valve for Dual-Zone Heater Plumbing
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Solution Overview
Problem
Multiple heater systems in vehicles are complex and costly due to numerous components, which increases the likelihood of wear, failure, and leakage, making them inefficient and expensive to maintain.
Innovation Solution
A flow control valve with a rotatable cylinder and bypass outlet that simplifies plumbing and packaging by allowing continuous coolant circulation and independent control of individual heaters, reducing the need for multiple components and maintaining comfort by preventing unwanted heat distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple control valves, actuators, tees, and connecting tubing are used to independently control front and rear heaters with bypass capability, then independent control of individual heaters is achieved, but device complexity and cost increase significantly
Solution Approach 1:
The patent combines multiple control functions into a single integrated control valve body. The valve body includes multiple outlets (front heater outlet, rear heater outlet, bypass outlet) and uses a single actuator with a rotatable cylinder to control flow distribution to all outlets simultaneously. This merging of functions reduces the number of components from multiple separate valves and actuators to one unified device.
Solution Approach 2:
The control valve is designed as a multi-functional device that can independently control flow to the front heater, rear heater, and bypass outlet simultaneously. The rotatable cylinder mechanism allows a single actuator to perform multiple control functions by rotating to different positions, enabling one component to replace what would traditionally require multiple separate components.
2Adaptability or versatility
If multiple control valves and components are installed in the heating system, then independent heater control is enabled, but the likelihood of wear, failure, and leakage increases
Solution Approach 1:
By merging multiple control functions into a single valve body with integrated seals and pathways, the patent eliminates the need for multiple separate components that would each require their own seals, actuators, and connections. This consolidation reduces the total number of potential failure points while maintaining independent control capability.
3Adaptability or versatility
If traditional multiple component systems are used for dual zone heating with bypass, then heating control flexibility is achieved, but plumbing and packaging complexity increases
Solution Approach 1:
The patent integrates the plumbing functions directly into the valve body structure. The valve body contains internal passages that connect the inlet to multiple outlets (front heater, rear heater, bypass), eliminating the need for external tubing and connecting devices. This integration simplifies both manufacturing and installation while maintaining full heating control flexibility.
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 flow control valve simplifies the plumbing and packaging of multiple heater systems while maintaining independent control of heaters, ensuring continuous coolant circulation and preventing unwanted heat in the passenger compartment, thus reducing maintenance costs and improving occupant comfort.
Implementation Method 1
The flow control valve uses a rotatable cylinder as a passageway and as a coolant directing device
Implementation Method 2
Control of fluid flow through the various ports of the flow control valve is provided by an actuator that controls the positioning of a flow directing cylinder
Data Source
AI summary
A flow control valve for selectively routing a coolant in a dual-zone heater system is provided. The flow control valve includes a housing and a flow control device. The housing includes an inlet port, a bypass outlet, a front heater outlet, and a rear heater outlet communicating through an internal cavity. The flow control device, which can be a cylinder, sphere, etc., is rotatably positioned in the internal cavity. The flow control device has an axial channel and generally radial aperture. The axial channel transports the coolant received from the inlet port through the flow control device, and the aperture delivers the coolant to one or more of the bypass outlet, the front heater outlet, and the rear heater outlet as the flow control device is rotated. In this way the circuit is not deadheaded.