Domestic countertop appliances
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Solution Overview
Problem
Domestic countertop appliances, such as kettles and toasters, often have indicator lights that are only visible from a limited viewing angle due to their localized placement, making it difficult for users to determine the operational state of the appliance from other angles.
Innovation Solution
The appliance features a distributed arrangement of multiple transparent windows across its exterior wall, illuminated by a light source that can be reflected or projected through a light diffusing element, providing a broader illumination effect that is visible from a wider range of angles, enhancing user friendliness and visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a single localized indicator light is used, then the device complexity is reduced, but the viewing angle and visibility are limited
Solution Approach 1:
The patent divides the single indicator light function into multiple separate indicator lights distributed across the exterior wall. Each indicator light is positioned at different locations to provide illumination visible from various viewing angles, thereby segmenting the illumination function to overcome the limited viewing angle problem while maintaining clear visibility of the operational state.
Solution Approach 2:
The patent transitions from a single-point (localized) indicator light arrangement to a distributed spatial arrangement across the exterior wall surface. By adding spatial distribution as a new dimension, the system achieves wide-angle visibility without requiring a single complex omnidirectional light source, thus resolving the contradiction between simplicity and viewing angle.
2Ease of operation
If multiple distributed windows are used across the exterior wall, then the viewing angle is increased, but the device complexity increases
Solution Approach 1:
The exterior wall is designed to serve multiple functions: it provides structural support, aesthetic appearance, and houses the distributed indicator lights for visibility. By making the exterior wall multi-functional, the patent integrates the complexity of having multiple indicator elements into an already complex structural component, thereby minimizing additional complexity while achieving wide-angle visibility.
3Ease of operation
If indicator lights are placed away from the ON switch, then the viewing angle is improved, but the association between control and status indication is weakened
Solution Approach 1:
The patent applies local quality by having indicator lights distributed at specific strategic locations on the exterior wall, including areas near the ON switch and other visible positions. This localized distribution ensures that the association between the switch and indicator is maintained at the relevant location while additional indicators provide wide-angle visibility from other positions, thus resolving the contradiction between association and viewing angle.
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 increases the viewing angle from which the operational state of the appliance can be determined, making it more user-friendly by ensuring the illumination is visible across a larger area of the appliance's surface, regardless of the user's position.
Implementation Method 1
illuminated by a light source that can be reflected or projected through a light diffusing element
Implementation Method 2
The plurality of windows is arranged to allow light to pass through the one or more exterior walls to be viewed from an exterior of the appliance
Data Source
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AI summary
A domestic countertop appliance (102) for heating a fluid contained therein, comprising: an inner wall (116) forming a heating chamber (120) defining a volume of fluid to be heated in an interior of the appliance (102), a heating arrangement (130) arranged to heat the volume of fluid, and one or more exterior wall(s) (104) extending around the inner wall (116) and separated from the inner wall (116) to define a space (122) therebetween. At least one exterior wall (104) comprises a plurality of at least partially transparent windows (114) arranged to allow light to pass therethrough. The plurality of at least partially transparent windows (114) is distributed across the exterior wall (104). A first light source is arranged to project light into the space (122) and towards a first portion comprising multiple ones of the plurality of at least partially transparent windows (114) such that, in use, light generated by the first light source passes through the first portion of the plurality of at least partially transparent windows (114).