Refrigerator Door Side Interface for Hidden Temperature Control

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Solution Overview

Problem

Refrigeration appliances face challenges in providing a user-friendly and accessible interface for controlling temperature settings while maintaining a clean, unobtrusive appearance, particularly for short users and in avoiding the consumption of usable space within the temperature-controlled compartments.

Innovation Solution

A refrigeration appliance design featuring a user interface integrated into the side portion of the doors, which is recessed and flush with the door surface, allowing for temperature control and status monitoring without compromising the appliance's aesthetic appearance, and includes input devices such as membrane switches and display devices for controlling fresh-food and freezer compartments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the user interface is placed within the temperature-controlled compartment, then users can access the interface, but usable space within the compartment is consumed

Engineering Contradiction:
Improveuser interface accessibilityVSAvoidusable space in compartment
Core Design Contradiction:
Ease of operationVSVolume of moving object

Solution Approach 1:

The user interface is extracted from the temperature-controlled compartment and relocated to the door assembly. This removes the interface from the interior space, eliminating the conflict between interface accessibility and usable compartment volume while maintaining user interaction capability.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The user interface is positioned on the door assembly, utilizing the door's surface area as a new spatial dimension for interface placement. This transitions the interface from interior 3D space to exterior door surface, resolving the space conflict.

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

2Ease of operation

If the user interface is placed near the top of the temperature-controlled compartment, then the interface is positioned for standard users, but short users cannot easily reach the interface

Engineering Contradiction:
Improveinterface reachabilityVSAvoidinterface accessibility for different user heights
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The user interface is positioned on the door assembly at an ergonomically accessible height that is equidistant from all users regardless of their height. This creates an equipotential access point that eliminates the height-based accessibility disparity experienced with top-mounted interfaces.

Inventive Principle:
Principle #12Equipotentiality

3Ease of operation

If the user interface is placed on an exterior face of the door, then users can control cooling effects, but the appliance appearance becomes unsightly

Engineering Contradiction:
Improvecooling control accessibilityVSAvoidappliance appearance
Core Design Contradiction:
Ease of operationVSShape

Solution Approach 1:

The user interface is positioned on the side portion of the door assembly, utilizing a localized area that does not compromise the overall aesthetic appearance of the appliance. This selective placement maintains the clean exterior face while providing functional accessibility.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The side portion of the door assembly serves as an intermediary location between the interior compartment and the exterior face. This intermediate position allows the user interface to be accessible for controlling cooling effects while remaining visually subordinate to the main appliance appearance.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Shape

If the user interface is recessed and flush with the door surface, then the appearance remains clean and simple, but the interface components occupy door space

Engineering Contradiction:
Improveappliance appearanceVSAvoiddoor surface area
Core Design Contradiction:
ShapeVSArea of stationary object

Solution Approach 1:

The user interface components are nested within a recessed portion of the door assembly, with the interface surface being substantially flush with the outer surface of the door. This nesting approach allows the interface to be housed within the door structure without protruding, maintaining the clean appearance while accommodating necessary components.

Inventive Principle:
Principle #7Nested doll (Nesting)

Data Source

PatentUS8011203B1Refrigeration appliance with hidden user interface
Publication Date: 2011.09.06 ELECTROLUX CONSUMER PROD INC
  • US8011203B1 patent drawing
  • US8011203B1 patent drawing
  • US8011203B1 patent drawing

AI summary

Provided is a refrigeration appliance including a cabinet defining a fresh-food compartment and a freezer compartment. The refrigeration appliance includes a refrigeration system that is operable to provide a cooling effect to an interior of the fresh-food and freezer compartments. A pair of doors is pivotally connected to the cabinet with a hinge assembly for restricting access to the interior of the fresh-food compartment. Each door includes a side portion extending between an exterior face and an interior portion of the door. The side portions of the doors generally oppose each other when the doors are closed. A user interface is also provided to the side portion of at least one of the doors comprising an input device to be manipulated by a user for controlling a target temperature within at least one of the fresh-food and freezer compartments.