Magnetic Beverage Dispenser Knob With Hygienic Touch Control
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Solution Overview
Problem
Existing beverage dispenser controls, such as push buttons and capacitive touch sensors, suffer from durability issues, hygiene concerns, and aesthetic limitations, particularly when made of different materials than the rest of the tap, leading to wear, tear, bacterial contamination, and difficulty in cleaning.
Innovation Solution
A control knob combining a selection ring with a touch button, where the selection ring rotates with magnets to provide haptic feedback and is made of durable metals like stainless steel or brass, and a touch button lacking moving parts for improved longevity and hygiene, integrated with a convertor to sense rotation and provide electronic signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If push buttons with moving parts are used for beverage dispenser control, then the control functionality is achieved, but the durability decreases due to wear and tear
Solution Approach 1:
The patent replaces traditional mechanical push buttons with capacitive touch sensors that detect changes in capacitance when a user touches the control surface. This eliminates moving parts entirely, allowing the control interface to be made from durable materials like stainless steel or glass that can withstand repeated use without mechanical wear.
Solution Approach 2:
The patent employs a flexible touch-sensitive surface that can be integrated into the dispenser housing. This thin film technology allows the control interface to maintain its structural integrity while providing tactile feedback, eliminating the need for mechanical buttons while preserving user interaction quality.
2Object-affected harmful factors
If push buttons with gaps and crevices are used for beverage dispenser control, then the control functionality is achieved, but the hygiene deteriorates due to bacterial contamination
Solution Approach 1:
By replacing mechanical push buttons with capacitive touch sensors, the patent creates a seamless, gap-free control surface. The entire surface can be made from non-porous materials like stainless steel or glass that prevent bacterial harboring and allow for easy cleaning and sanitization.
Solution Approach 2:
The patent integrates the control interface seamlessly into the dispenser housing, creating a homogeneous surface without crevices or gaps. This uniform surface can be easily cleaned and sanitized, preventing bacterial contamination while maintaining aesthetic consistency.
3Reliability
If capacitive touch sensors are used for beverage dispenser control, then the durability is improved by eliminating moving parts, but the reliability decreases when exposed to water or dirt
Solution Approach 1:
The patent employs a protective overlay or coating on the capacitive touch sensors that is transparent to the capacitive field but impermeable to water and dirt. This allows the sensors to function reliably in wet environments while maintaining the durability benefits of having no moving parts.
Solution Approach 2:
The patent uses a protective barrier or coating that creates an inert environment for the capacitive sensors, shielding them from direct contact with water and contaminants while still allowing capacitive coupling to occur for touch detection.
4Ease of operation
If different materials are used for control exterior and tap body, then the control functionality is optimized, but the aesthetic consistency deteriorates
Solution Approach 1:
The patent integrates the control interface seamlessly into the dispenser housing, creating a homogeneous appearance. The capacitive touch sensors can be made from the same material as the dispenser body (e.g., stainless steel), maintaining aesthetic consistency while providing optimized control functionality through advanced sensor technology.
Solution Approach 2:
The patent uses materials like stainless steel or glass for the control surface that serve multiple functions: they provide the structural integrity and aesthetic appearance of the dispenser body while also enabling capacitive touch sensing functionality. This universal material approach eliminates the need for separate control panel materials.
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 control knob offers enhanced durability, ease of cleaning, and improved hygiene by using metals for the selection ring and touch button, providing a pleasant haptic feedback and electronic selection indication, suitable for various beverage dispensers.
Implementation Method 1
a second set of magnets arranged about the central axis and remaining stationary, such that rotating the selection ring yields changes in the interaction forces between the rotating first set of magnets and the stationary second set of magnets
Data Source
Figure 1
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AI summary
In a first aspect, the present invention relates to a control knob (32) for a beverage dispenser, comprising a first input means and a second input means. The first input means comprises: (i) a control knob (32) housing comprising a selection ring (321) rotatable around a central axis (332); (ii) a first set of magnets (324) arranged about the central axis (332) and rotating with the selection ring (321); (iii) a second set of magnets (325) arranged about the central axis (332) and remaining stationary, such that rotating the selection ring (321) yields changes in the interaction forces between the rotating first set of magnets (324) and the stationary second set of magnets (325); and (iv) a convertor for sensing and converting said rotation of the selection ring to an electronic signal, thereby providing a first input signal. The second input means comprises: (v) a touch button (322) integrated with a portion (328) of the control knob housing such that the touch button (322) is responsive to a mechanical force applied on said portion, thereby providing a second input signal.