Thermostatic Valve with Integrated Bypass for Compact Engine Cooling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing thermostatic valves lack a compact design that allows for efficient temperature-dependent control of coolant flows in engine systems, leading to suboptimal performance and complexity in integration.
Innovation Solution
A thermostatic valve with a main valve and a short-circuit valve that delimits a mixing chamber, featuring a thermostatic working element with a housing and piston that moves relative to the housing against a return spring, where the abutment serves as a valve seat for the short-circuit valve, enabling a compact and integrated unit with improved flow dynamics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a thermostatic valve is designed with separate main valve and bypass valve components, then the valve can perform temperature-dependent coolant flow control, but the structural complexity and integration difficulty increase
Solution Approach 1:
The patent combines the main valve and bypass valve into a single integrated thermostatic valve assembly. The valve element simultaneously controls both the main coolant flow path and the bypass flow path, eliminating the need for separate valve components and reducing structural complexity while maintaining full temperature-dependent flow control functionality.
Solution Approach 2:
The single valve element performs multiple functions by simultaneously regulating the main valve flow and bypass valve flow based on coolant temperature. This multi-functional design allows one component to replace what would traditionally require separate valves, improving integration capability while controlling complexity.
2Speed
If the thermostatic working element is arranged in the mixing chamber with flow around it, then rapid response to temperature changes is achieved, but the space requirements and structural design complexity increase
Solution Approach 1:
The thermostatic working element is nested within the mixing chamber assembly, with the valve element positioned such that coolant flow passes around it. This nested arrangement allows the working element to be compactly integrated into the mixing chamber volume, achieving rapid thermal response through direct flow contact while minimizing overall space requirements.
Solution Approach 2:
The valve element is designed with a configuration that allows coolant flow to pass around it in three-dimensional space, maximizing the surface area exposed to flowing coolant without increasing the overall footprint. This dimensional optimization enables rapid heat transfer and response speed within constrained spatial dimensions.
3Device complexity
If the abutment is designed as a valve seat for the short-circuit valve, then a compact integrated unit is created, but the manufacturing precision requirements increase
Solution Approach 1:
The abutment is integrated into the valve housing and serves dual functions as both a structural support element and the valve seat for the bypass valve. This merging of functions creates a compact integrated unit while the valve seat is formed as a continuous surface with the abutment, reducing the number of separate precision-machined components and interfaces.
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 creates a compact, efficient thermostatic valve that ensures rapid response and effective temperature-dependent control of coolant flows with reduced complexity and improved stability, facilitating easy integration in engine systems.
Implementation Method 1
a thermostatic working element arranged in the mixing chamber, comprising a housing and a working piston which can be moved relative to the housing
Implementation Method 2
one of the housing or the working piston counter to the force of a return spring entrained valve element
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The valve (1) has a main valve (10) and a short-circuit valve (12) that limits a mixing chamber (14). A thermostatic operating element (3) arranged in the chamber has a working piston (31) movable relative to a housing (30). A valve element (4) is taken along from the housing or the piston against force of a return spring (5) and a counter bearing (6) that advances with the spring. The bearing is arranged as a valve seat for valve (12). The valve (12) is opened or closed depending on an operating position of the element. The element is arranged as slidegate valves for closing the valve (12).