Thermostatic Valve Pressure Balancing Single-Body Design
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Solution Overview
Problem
Existing thermostatic valves face challenges in maintaining precise and stable outlet temperature due to varying fluid pressures and temperatures, leading to energy wastage and safety issues, while also being complex and costly to produce and install.
Innovation Solution
A thermostatic valve with a pressure balancing mechanism, featuring a single-piece casing with a heat-regulation device and a heat-sensitive element, utilizing elastic sealing and balancing means, and flow chambers to regulate temperature and pressure near the outlet, reducing the complexity and cost of assembly and production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure balancing device is added to thermostatic valves, then temperature stability is improved, but device complexity increases
Solution Approach 1:
The patent combines the pressure balancing function and temperature regulation function into a single integrated thermostatic valve body. The heat-sensitive element is positioned to directly sense mixed water temperature while the valve internally balances pressures of incoming hot and cold water streams, eliminating the need for separate pressure balancing devices and reducing overall system complexity.
Solution Approach 2:
The thermostatic valve is designed to perform multiple functions simultaneously: it regulates temperature by responding to heat-sensitive element signals, balances pressures of different water streams, and controls flow distribution. This multi-functionality is achieved through a unified valve structure that integrates pressure balancing chambers and temperature control mechanisms into one device.
2Manufacturing precision
If multiple ceramic discs are used for pressure balancing and flow regulation, then temperature regulation precision is improved, but manufacturing cost and assembly complexity increase
Solution Approach 1:
The patent integrates pressure balancing and flow regulation functions into a single valve mechanism rather than using separate ceramic discs for each function. The valve body incorporates internal chambers and passages that simultaneously achieve pressure equilibrium and controlled flow distribution, reducing the number of precision components needed.
Solution Approach 2:
The patent uses a simplified valve design that replicates the essential function of complex multi-disc systems through a more straightforward mechanical structure. Instead of multiple精密 ceramic discs requiring precise alignment, the invention employs a single valve assembly with integrated pressure balancing chambers that achieves similar temperature control precision through its geometric design and flow path configuration.
3Ease of operation
If heat-sensitive elements are positioned away from the outlet, then assembly is simplified, but temperature measurement accuracy deteriorates
Solution Approach 1:
The heat-sensitive element is pre-positioned within the valve body at the optimal location to sense mixed water temperature before the water exits. This preliminary positioning ensures that the element measures the actual mixed temperature that will be delivered to the user, rather than measuring temperature at a remote location where it may have changed due to heat loss or gain.
4Speed
If valve elements are subjected to continuous reciprocal movements, then temperature regulation responsiveness is improved, but wear increases
Solution Approach 1:
The valve employs a dynamic heat-sensitive element that automatically responds to temperature changes by expanding or contracting, which in turn adjusts the valve opening to balance water flows. This dynamic response provides rapid temperature regulation without requiring continuous manual adjustment or complex actuating mechanisms that would generate wear.
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 ensures precise temperature regulation of the mixed fluid, minimizes wear, and reduces production and installation costs, while maintaining stability even with sudden changes in fluid conditions, enhancing safety and energy efficiency.
Implementation Method 1
the use of a heat-sensitive element, made using a rapidly expanding and contracting material, which by means of a mechanical connection operates a heat regulation device
Implementation Method 2
the pressure balancing device equalises the outlet pressure of the fluids to be mixed under non-uniform conditions
Data Source
Figure 1
Figure 2A~2B
Figure 2C~2D
AI summary
The present invention relates to a thermostatic valve for mixing fluids (1), comprising: a casing (10), provided with outlet slots (110) and coupled with thermoswitch means (20); a heat-sensitive element (30), provided with a piston (130); a first elastic sealing means (40); a second elastic balancing means (50); a heat-regulation device (60); The casing (10) is made in a single element; said heat-sensitive element (30) being housed in said casing (10), in the portion opposite said thermoswitch means (20); said first elastic sealing means (40) being interposed between said heat-sensitive element (30) and said casing (10); said second elastic balancing means being housed in said casing (10), in the portion opposite said heat-sensitive element (30).