Freezer Air Guide Layout for Indirect Ice Maker Cooling

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Solution Overview

Problem

Refrigerator appliances often face challenges in guiding cooled air to the ice maker effectively due to limited internal space and potential obstructions, which can hinder indirect cooling and increase energy consumption.

Innovation Solution

The implementation of air guides protruding from the top freezer wall into the freezer chamber, which create air channels that direct cooled air to the ice maker, minimizing obstruction and ensuring unimpeded airflow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If air guides are not used, then the internal space of the refrigerator is maximized, but the cooled air flow may be blocked from reaching the ice maker

Engineering Contradiction:
Improveair flow communicationVSAvoidinternal space
Core Design Contradiction:
ReliabilityVSVolume of stationary object

Solution Approach 1:

The air guides extend vertically downward from the top freezer wall into the freezer chamber, utilizing the vertical dimension to create air channels that direct cooled air to the ice maker without occupying significant horizontal space. This dimensional approach allows air flow guidance while preserving internal storage volume.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Productivity

If air guides protrude into the freezer chamber, then cooled air is directed to the ice maker effectively, but the device complexity increases

Engineering Contradiction:
Improveice making efficiencyVSAvoidair guide structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The air guides are integrated directly into the top freezer wall structure, merging the air guidance function with the existing wall component. This integration approach directs cooled air to the ice maker effectively while avoiding the need for separate, complex air guiding mechanisms.

Inventive Principle:
Principle #5Merging (Combining)

3Productivity

If direct refrigerant cooling is used for the ice maker, then ice production is reliable, but energy consumption increases

Engineering Contradiction:
Improveice production efficiencyVSAvoidenergy consumption
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The air guides serve as an intermediary structure that channels cooled air from the sealed cooling system to the ice maker. This intermediary approach enables indirect cooling through air flow, reducing the energy consumption associated with direct refrigerant cooling while maintaining reliable ice production.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 air flow communication between the sealed cooling system and the ice maker, improving the efficiency of the ice making process by reducing the need for direct refrigerant cooling and preventing user-induced obstructions, thus optimizing energy usage and ice production.

Implementation Method 1

the ice maker may be ambiently exposed to cooled air within the refrigerator appliance, e.g., to indirectly cool the ice maker

Methodology Applied
Scientific EffectConvection: Convection

Implementation Method 2

a working fluid is used to directly cool the mold body, e.g., by conductive heat transfer

Methodology Applied
Scientific EffectHeat transfer: Conduction (thermal)

Data Source

PatentUS20240384919A1Air guide for a refrigerator appliance
Publication Date: 2024.11.21 HAIER US APPLIANCE SOLUTIONS INC
  • US20240384919A1 patent drawing
  • US20240384919A1 patent drawing
  • US20240384919A1 patent drawing

AI summary

A refrigerator appliance may include a freezer chamber having a freezer door rotatably mounted thereto. The freezer chamber may include an inner liner having a top freezer wall that defines one or more air channels. In addition, the refrigerator appliance may include an ice making assembly positioned at the freezer door. Furthermore, the refrigerator appliance may include one or more air guides that protrude into the freezer chamber from the top freezer wall. The refrigerator appliance may also include a light assembly attached to the top freezer wall. The light assembly may include a light source and a light lens that covers the light source.