Door-Mounted Icemaker Cooling Layout for Bottom-Freezer Refrigerators
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The design of door-mounted ice dispensers in bottom mount refrigerators is complicated due to the placement of the freezer compartment at the bottom, leading to reduced energy efficiency, increased costs, and compromised storage capacity, as existing solutions often require complex arrangements of ducts and ports to maintain the icemaker and storage receptacle at a suitable temperature.
Innovation Solution
A door-mounted icemaking system that includes an icemaking mold, an ice storage bin, a cold wall evaporator, and a reversible refrigeration circuit, allowing for direct cooling of the icemaking mold and efficient ice production and dispensing, with a hot wall condenser to dissipate heat through the exterior door wall, and a controller to optimize refrigerant flow for both ice production and ejection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the freezer compartment is placed at the bottom of the refrigerator, then the fresh food compartment is accessible at a convenient height, but the freezer compartment door is located too low for a door-mounted ice dispenser and the icemaker must be oriented opposite the above-freezing fresh food compartment
Solution Approach 1:
The ice dispenser system is segmented into separate functional components: the icemaker is mounted on the freezer compartment door while the dispenser mechanism is mounted on the fresh food compartment door. This segmentation allows each component to be optimally positioned for its function, with the icemaker near the cold air source and the dispenser at a convenient height for users.
Solution Approach 2:
A duct system acts as an intermediary to convey cold air from the freezer compartment through the fresh food compartment door to the icemaker. This intermediary mechanism enables the icemaker to be positioned on the fresh food compartment door while still receiving the cold air necessary for ice production, resolving the conflict between convenient positioning and functional requirements.
2Ease of operation
If the icemaker and storage receptacle are located in separate sub-compartments in the fresh food compartment, then the ice dispenser can be oriented correctly, but energy efficiency is reduced and storage capacity is compromised due to complex arrangements of ducts and ports
Solution Approach 1:
The icemaker and ice storage receptacle are merged into a single integrated assembly mounted on the freezer compartment door. This combination eliminates the need for separate sub-compartments and complex ducting arrangements, reducing energy loss while maintaining proper dispenser orientation. The integrated design allows cold air to be efficiently delivered to both the icemaker and storage area through a unified system.
3Ease of operation
If a door-mounted ice dispenser is installed on the fresh food compartment door, then the dispenser is at a convenient height, but the icemaker must be positioned opposite the above-freezing fresh food compartment requiring complex cooling arrangements
Solution Approach 1:
A dedicated duct system serves as an intermediary, channeling cold air from the freezer compartment through the fresh food compartment door to the icemaker. This intermediary cooling pathway enables the icemaker to be positioned on the fresh food compartment door at a convenient height while receiving adequate cooling without requiring complex port arrangements within the door structure itself.
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 solution enhances energy efficiency, reduces costs, and improves storage capacity by integrating the icemaking system within the fresh food compartment door, providing a convenient and efficient method for ice production and dispensing while maintaining optimal temperatures.
Implementation Method 1
a cold wall evaporator disposed proximate the ice storage bin and along at least one interior wall among the one or more interior walls of the door
Implementation Method 2
an icemaking evaporator that provides direct cooling of the icemaking mold
Implementation Method 3
a hot wall condenser may be used in a door-mounted icemaking system to dissipate heat generated by a refrigeration circuit through an exterior wall of a door
Implementation Method 4
a reversible refrigeration circuit may be used in connection with an icemaking evaporator to assist in ejecting ice from an icemaking mold
Data Source
AI summary
A refrigerator and method utilize a door-mounted icemaking system including an icemaking mold, an ice storage bin and a cold wall evaporator disposed proximate the ice storage bin along an interior wall of the door to provide cooling proximate the ice storage bin. In some instances, the cold wall evaporator may be in addition to an icemaking evaporator that provides direct cooling of the icemaking mold, and furthermore, in some instances, the cold wall and icemaking evaporators may be separately controllable to optimize cooling within the door-mounted icemaking system. In addition, in some instances, a hot wall condenser may be used in a door-mounted icemaking system to dissipate heat generated by a refrigeration circuit through an exterior wall of a door. Further, in some instances a reversible refrigeration circuit may be used in connection with an icemaking evaporator to assist in ejecting ice from an icemaking mold.