Integrated Refrigeration Valve Block for Single Leak Path Service
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Solution Overview
Problem
Conventional service valve assemblies in refrigeration systems suffer from leakage issues and require multiple connection paths, necessitating new tools for servicing, which complicates installation and maintenance.
Innovation Solution
A service valve assembly design that integrates a shut-off valve and control valve within the housing, reducing leakage paths to one and allowing connection to various refrigeration systems using existing tools, with a default configuration that communicates with the condenser side port for initial processing and subsequent processing through the evaporation side port, featuring a piston valve and poppet mechanism for sealing and flow control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional service valve assembly uses separate service connections for condenser and evaporation sides, then access to both sides is provided, but the number of leakage paths increases to two
Solution Approach 1:
The patent combines the service connections for both condenser and evaporation sides into a single integrated service valve assembly. The housing contains both service ports and the valve mechanism in one unified structure, reducing the number of separate connection points and potential leakage paths from two to one.
Solution Approach 2:
The service valve assembly is designed to provide multiple functions through a single device: it serves both the condenser side and evaporation side service needs, controls flow in multiple directions, and provides isolation capabilities for both sides. This multi-functionality eliminates the need for separate service valves while maintaining comprehensive access.
2Productivity
If a service valve assembly is designed with integrated shut-off and control valves, then flow capacity is enhanced and leakage paths are reduced, but the device complexity increases
Solution Approach 1:
The shut-off valve and control valve functions are merged into a single integrated valve mechanism within the housing. This combination allows the system to achieve both flow control and isolation functions through one coordinated mechanism, enhancing flow capacity while consolidating complexity into a unified design rather than multiple separate components.
3Ease of operation
If the service connection is designed with a default configuration communicating with the condenser side port, then initial processing is simplified, but flexibility for different connection configurations is reduced
Solution Approach 1:
The valve mechanism is designed with movable components that can be positioned in different configurations. The piston and valve elements can be adjusted to change which service port communicates with which system side, allowing the default condenser-side configuration to be easily changed to an evaporation-side configuration as needed.
Solution Approach 2:
The service valve assembly is pre-configured with the condenser side as the default active connection, allowing initial system processing to proceed immediately without additional setup. The design anticipates the need for evaporation side access and provides a straightforward mechanism to switch configurations when required.
Data Source
AI summary
A service valve assembly that is designed to minimize leakage by reducing the number of leakage paths from the valve assembly. In addition, the service valve assembly is designed to permit connection to many different refrigeration systems and has higher flow capacity. The valve assembly is engageable by current servicing tools so that purchase of new service tools is not required. In the valve assembly, the service connection is designed as part of the shut-off valve and communicates with the condenser side port. Therefore, initial processing through the condenser side port and subsequent processing through the evaporation side port occur through the combined service connection and shut-off valve structure. Once installed, the described valve assembly has one leak path versus two leak paths in known valve assemblies.