Refrigerator Icemaker Heat Shielding for Ice Release

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Solution Overview

Problem

Existing icemakers in refrigerators face issues where heat from the heater used to detach ice is radiated into the refrigerator, causing objects stored at low temperatures to be heated and potentially overheating the appliance.

Innovation Solution

An icemaker design that includes a heater shielding unit to prevent heat generated from the heater from entering the refrigerator, along with a splash preventing unit for the water supply hopper to prevent water from splashing and freezing inside the fridge.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a heater is used to detach ice from the icemaker, then ice detachment is facilitated, but heat is radiated into the refrigerator causing stored objects to be heated and potentially overheating the appliance

Engineering Contradiction:
Improveice detachmentVSAvoidrefrigerator internal temperature
Core Design Contradiction:
Ease of operationVSTemperature

Solution Approach 1:

A heat shielding member is introduced as an intermediary between the heater and the refrigerator interior. This shielding member blocks and redirects heat away from the refrigerator, allowing the heater to effectively detach ice while preventing heat from raising the refrigerator's internal temperature

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The icemaker is segmented into distinct functional zones: a heater assembly for ice detachment, a heat shielding component to redirect heat, and an ice storage section. This segmentation allows the heating function to operate independently without affecting the refrigerator's thermal environment

Inventive Principle:
Principle #1Segmentation

2Productivity

If the heater supplies heat into the refrigerator to detach ice, then ice detachment is achieved, but the refrigerator becomes overloaded

Engineering Contradiction:
Improveice detachment efficiencyVSAvoidrefrigerator power load
Core Design Contradiction:
ProductivityVSPower

Solution Approach 1:

The heat shielding member acts as a mediator that confines heater output to the ice detachment zone, preventing heat from propagating into the refrigerator. This allows efficient ice detachment while avoiding the need for the refrigerator's cooling system to work harder to compensate for the added heat

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If water supply hopper is exposed, then water supply is accessible, but water may splash and freeze inside the refrigerator

Engineering Contradiction:
Improvewater supply accessibilityVSAvoidwater splashing and freezing
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

A transparent or translucent cover is placed over the water supply hopper, creating a physical barrier that prevents water from splashing out while still allowing users to visually monitor water levels and access the water supply through the transparent material

Inventive Principle:
Principle #30Flexible shells and thin films

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

Prevents heat from the heater from entering the refrigerator, maintaining low temperatures and reducing the risk of overheating, while also preventing water splashing and freezing, enhancing user safety and appliance efficiency.

Implementation Method 1

a heater provided to the icemaker body to generate heat to facilitate detachment of the made ice

Methodology Applied
Scientific EffectHeat generation: Joule Heating

Implementation Method 2

a heater shielding unit provided to prevent the heat generated from the heater from being supplied to an inside of the refrigerator

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Data Source

PatentUS7823408B2Icemaker in refrigerator
Publication Date: 2010.11.02 LG ELECTRONICS INC
  • US7823408B2 patent drawing
  • US7823408B2 patent drawing
  • US7823408B2 patent drawing

AI summary

An icemaker in a refrigerator is disclosed, by which heat generated from a heater to detach ice is prevented from being transferred to an inside of the refrigerator. The present invention includes an icemaker body provided to a prescribed position of the refrigerator to make to ice from a supplied water, a heater provided to the icemaker body to generate heat to facilitate detachment of the made ice, and a heater shielding unit provided to prevent the heat generated from the heater from being supplied to an inside of the refrigerator.