Bimetal Ice Maker Mold for Low-Energy Cube Release

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Solution Overview

Problem

Existing ice making systems in refrigeration appliances are inefficient in removing ice cubes from mold compartments, as they require significant energy to melt ice and can lead to refreezing issues, causing clogs and energy inefficiency.

Innovation Solution

Incorporating bimetallic elements within the ice maker mold compartments that deform upon energization to assist in removing ice cubes, reducing the need for extensive melting and minimizing refreezing by providing a mechanical means to dislodge ice cubes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If heating devices are used to melt ice cubes for removal, then ice cubes can be removed from mold compartments, but energy consumption increases significantly

Engineering Contradiction:
Improveice cube removalVSAvoidenergy consumption
Core Design Contradiction:
Ease of operationVSUse of energy by moving object

Solution Approach 1:

The patent replaces the thermal field (heating devices that melt ice) with a mechanical field (bimetallic elements that physically push ice cubes). The bimetallic elements are actuated by a motor to mechanically dislodge and push ice cubes out of the mold compartments, eliminating the need for energy-intensive heating processes while achieving the same ice removal function.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If heating is applied to melt ice cubes, then ice cubes can be removed, but melted ice may refreeze and cause clogs

Engineering Contradiction:
Improveice cube removalVSAvoidsystem reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent eliminates the melting-refreezing problem by substituting mechanical action for thermal processing. The bimetallic elements physically push intact ice cubes out of the mold compartments without melting them, preventing the refreezing issue that causes clogs in the dispensing system. This mechanical approach maintains ice cube integrity throughout the removal process.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If heating devices are used to remove ice cubes, then ice can be harvested, but the process becomes inherently inefficient

Engineering Contradiction:
Improveice harvesting efficiencyVSAvoidenergy loss
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The patent replaces the inefficient thermal cycle (freezing then melting) with a direct mechanical harvesting system. The bimetallic elements, actuated by a motor, directly push ice cubes out of the mold compartments into the harvest bin in a single action, eliminating the energy-wasting melt-refreeze cycle and significantly improving overall system efficiency.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 bimetallic elements enhance the efficiency of ice cube removal by reducing energy consumption and preventing undesirable refreezing, thus improving the operational efficiency and reliability of the ice making process.

Implementation Method 1

one or more bimetallic elements. Each bimetallic element is configured with a respective one of the compartments so that when energized the bimetallic element deforms with a portion moving in a direction so as to assist in removing an ice cube from the compartment

Methodology Applied
Scientific EffectBimetallic strip deformation: Bi-Metallic Strip

Data Source

PatentUS8844313B2Ice making assembly with bimetallic actuating element and refrigeration appliance incorporating same
Publication Date: 2014.09.30 HAIER US APPLIANCE SOLUTIONS INC
  • US8844313B2 patent drawing
  • US8844313B2 patent drawing
  • US8844313B2 patent drawing

AI summary

An ice making assembly includes an ice maker including a mold body defining a one or more compartments for forming ice cubes therein, a harvesting assembly removes an ice cube from the compartment, and one or more bimetallic elements. Each bimetallic element is configured with a respective one of the compartments so that when energized the bimetallic element deforms with a portion moving in a direction so as to assist in removing an ice cube from the compartment. Related refrigeration appliances are also disclosed.