Multi-Directional Valve for Multi-Evaporator Refrigerant Flow Control
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Solution Overview
Problem
Conventional refrigerating appliances require multiple components and complex configurations to manage refrigerant flow efficiently across multiple evaporators, leading to inefficiencies and increased complexity.
Innovation Solution
A multi-directional valve system that selectively delivers thermal exchange media to multiple evaporators, including a freezer, refrigerator, and pantry evaporators, allowing for efficient operation with a single compressor and condenser, and a method for operating the appliance that adjusts refrigerant flow based on selected cooling modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple evaporators are used for multiple refrigerating functions, then the versatility and cooling capacity are improved, but the device complexity and component quantity increase
Solution Approach 1:
A single multi-position valve is designed to direct refrigerant to multiple evaporators (freezer, refrigerator, pantry) based on different valve positions, allowing one component to perform multiple functions that would traditionally require separate components and control mechanisms
Solution Approach 2:
Multiple refrigerant flow paths that would traditionally require separate pumps, check valves, and control components are merged into a single integrated valve system, reducing the total number of components while maintaining the ability to serve multiple evaporators
2Ease of operation
If separate pumps and check valves are used for each evaporator, then the refrigerant flow control is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The multi-position valve serves multiple control functions simultaneously - it acts as a flow director, a valve, and a control mechanism for all evaporators through a single component, replacing what would traditionally require multiple separate pumps and check valves
Solution Approach 2:
The complex system of multiple pumps and check valves is extracted and replaced by a single integrated valve mechanism, removing unnecessary components while retaining the essential refrigerant flow control functionality
3Reliability
If all thermal exchange media passes through the freezer evaporator, then the compressor efficiency is improved, but the device complexity increases
Solution Approach 1:
The system uses periodic valve positioning to control the refrigerant flow path, where the valve is positioned to direct all media through the freezer evaporator during specific operating cycles to maximize compressor efficiency, and can be adjusted to different positions when other evaporators need service
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
This configuration enables efficient cooling across multiple compartments with reduced complexity, eliminating the need for separate pumps and check valves, and optimizing the refrigerant cycle by ensuring all media passes through the freezer evaporator before return, enhancing compressor efficiency and cooling capacity.
Implementation Method 1
A multi-directional outlet valve selectively delivers the thermal exchange media to the freezer evaporator, wherein the multi-directional outlet valve also selectively delivers the thermal exchange media to at least one secondary evaporator
Implementation Method 2
a refrigerant line having a compressor and a condenser
Implementation Method 3
A thermal exchange media is delivered from the condenser and through the refrigerant line
Data Source
AI summary
A refrigerating appliance includes a refrigerant line having a compressor and a condenser. A thermal exchange media is delivered from the condenser and through the refrigerant line to at least a freezer evaporator of a plurality of evaporators, wherein the thermal exchange media leaving the freezer evaporator defines spent media that is returned to the compressor. A multi-directional outlet valve selectively delivers the thermal exchange media to the freezer evaporator, wherein the multi-directional outlet valve also selectively delivers the thermal exchange media to at least one secondary evaporator of the plurality of evaporators to define a partially-spent media that is delivered to the freezer evaporator.