Jumper Drain Pressure Equalization to Reduce Refrigerator Door Vacuum
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Solution Overview
Problem
Conventional refrigeration appliances experience pressure differentials that create vacuums when doors are closed quickly, making it difficult to reopen the door until pressure equalizes, which affects user experience.
Innovation Solution
A jumper drain system that provides fluid communication between the storage compartment and the ambient environment through a drain, collecting and transferring liquid condensate from the evaporator, and includes a housing with a cavity, an inlet, an outlet, and a pressure equalizer opening to equalize pressure differentials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the door is closed quickly, then the cooling efficiency is improved, but a vacuum forms making it difficult to reopen the door
Solution Approach 1:
The jumper drain assembly acts as an intermediary pressure equalization system between the storage compartment and ambient environment. It includes a drain for condensate removal and a pressure equalization feature that allows air to pass through, equalizing pressure without compromising the sealed environment needed for cooling efficiency.
Solution Approach 2:
The pressure equalization function is extracted as a separate feature from the door itself, implemented through the jumper drain assembly that provides an alternative pathway for pressure equalization independent of door opening/closing actions.
2Speed
If the door is opened and closed quickly, then the cooling efficiency is maintained, but warm ambient air rushes into the storage compartment creating vacuum
Solution Approach 1:
The jumper drain assembly serves as a mediator that controls pressure equalization through its pressure equalization feature, allowing gradual pressure adjustment rather than sudden air rushes into the storage compartment.
Solution Approach 2:
The pressure equalization feature provides preliminary pressure adjustment before significant temperature or pressure differentials can develop, preventing vacuum formation and warm air rushes during quick door operations.
3Reliability
If a sealed environment is maintained for cooling, then cooling efficiency is improved, but pressure differential causes difficulty in door operation
Solution Approach 1:
The jumper drain assembly acts as an intermediary that maintains the sealed cooling environment while providing a controlled pathway for pressure equalization, resolving the conflict between sealing integrity and door operability.
Solution Approach 2:
The system is segmented into separate functional components: the sealed storage compartment for cooling and the jumper drain assembly for pressure management, allowing each to optimize its function independently.
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 jumper drain system effectively reduces the formation of vacuums by allowing pressure equalization, improving the user's experience by facilitating easier door opening and reducing issues related to warm air flow.
Implementation Method 1
A pressure equalizer opening is formed in the housing and is configured to provide fluid communication between the cavity and an ambient environment external to the refrigerator appliance in order to equalize a pressure differential within the refrigerator appliance
Implementation Method 2
The drain collects and transfers liquid condensate from the evaporator
Data Source
AI summary
A jumper drain for a refrigerator appliance, the jumper drain including a housing with a cavity defined therein and that is in fluid communication with a storage compartment of the refrigerator appliance. An inlet and an outlet extend from the housing and are both in fluid communication with the cavity. The outlet is disposed at a location that is offset from the inlet. A pressure equalizer opening is formed in the housing. The pressure equalizer opening is configured to provide fluid communication between the cavity and an ambient environment external to the refrigerator appliance in order to equalize a pressure differential within the refrigerator appliance.