Six-Way Directional Valve for Simpler Air Conditioner Piping
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Solution Overview
Problem
The high cost and complex pipe connections associated with using two four-way directional valves in series in air conditioners increase the overall cost and complexity of the directional valve system.
Innovation Solution
A six-way directional valve is introduced, featuring a valve body with a valve spool and pilot valve assembly that allows for directional control of refrigerant flow, eliminating the need for multiple four-way valves and simplifying pipe connections by using a single unit with first to sixth connecting pipes, and optimizing the structure of the outdoor unit for an air conditioner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two four-way directional valves are connected in series to achieve directional circulation, then the directional control function is improved, but the cost and device complexity increase
Solution Approach 1:
The patent combines the functions of two four-way directional valves into a single six-way directional valve. The valve body integrates multiple valve chambers (first, second, third, and fourth chambers) and multiple connecting pipes (first through sixth connecting pipes) into one unified structure, eliminating the need for separate valve assemblies and reducing overall system complexity while maintaining full directional control capability
Solution Approach 2:
The six-way directional valve performs multiple functions that previously required two separate valves. The valve spool can be positioned in different locations to simultaneously control refrigerant flow through multiple paths, enabling the single valve to replace two four-way valves and achieve the same directional circulation control with reduced component count
2Adaptability or versatility
If two four-way directional valves are connected in series, then the directional control function is achieved, but the cost of the directional valve system increases
Solution Approach 1:
By merging two separate four-way directional valves into one integrated six-way directional valve, the patent reduces the total number of valve bodies, valve spools, and associated components that need to be manufactured and assembled. This consolidation lowers material costs, manufacturing complexity, and assembly costs while maintaining the required directional circulation functionality
3Adaptability or versatility
If two four-way directional valves are used in series, then directional control is achieved, but the pipe connection complexity increases
Solution Approach 1:
The patent integrates six connecting pipes (first through sixth connecting pipes) into a single valve body structure, allowing all necessary refrigerant flow paths to be controlled from one location. This eliminates the need for complex interconnections between two separate valve assemblies, simplifying the overall pipe layout and reducing installation complexity
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 six-way directional valve reduces the cost and complexity of the directional valve system, simplifies pipe connections, and enhances the reliability of the outdoor unit's connection, achieving the same directional control as multiple four-way valves while minimizing costs.
Implementation Method 1
the valve spool is driven to move by a pressure difference between the two valve chambers
Implementation Method 2
a pilot valve assembly, communicated with the two valve chambers, so as to switch pressures in the two valve chambers
Data Source
AI summary
A six-way directional valve (100), an outdoor unit (1000) having the same and an air conditioner are provided. The six-way directional valve (100) includes: a valve body (1), defining a valve cavity (5) therein, the valve cavity (5) having a first side wall (11) and a second side wall (12) disposed oppositely to each other, the valve body (1) being provided with a first connecting pipe (A) to a sixth connecting pipe (F); a valve spool (2), movably disposed in the valve cavity (5), a first chamber (21) being defined between the valve spool (2) and the first side wall (11), a second chamber (22) being defined between the valve spool (2) and the second side wall (12), and a third chamber (23) being defined between the valve spool (2), the first side wall (11) and the second side wall (12); and a pilot valve assembly (4).