Electric motor operated kitchen appliance
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Solution Overview
Problem
Existing electric motor operated kitchen appliances with grinding functions lack effective mechanisms to compensate for axial tilt and radial displacement of grinding elements during comminution, leading to inefficient grinding and potential noise issues.
Innovation Solution
The integration of a coupling element with elastic properties that connects the grinding element to the rotating element, allowing for flexible compensation of axial tilt and radial displacement, while also dampening impacts and reducing noise through sound-absorbing elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid connection is used between the grinding element and rotating element, then structural stability is improved, but axial tilt and radial displacement cannot be compensated leading to inefficient grinding
Solution Approach 1:
The coupling element incorporates an elastic partial area that changes the mechanical parameters of the connection from rigid to flexible, allowing axial tilt and radial displacement compensation while maintaining structural integrity. This parameter change enables the system to adapt to grinding conditions and maintain efficient grinding performance.
Solution Approach 2:
The coupling element is formed as a composite structure combining rigid connection areas with an elastic partial area. This composite design allows different regions of the same component to fulfill different functions: rigid sections provide structural stability while the elastic section provides flexibility for compensation.
2Strength
If the grinding element is firmly fixed to the rotating element, then connection strength is improved, but impacts during comminution cannot be dampened leading to noise issues
Solution Approach 1:
The elastic partial area in the coupling element acts as a pre-designed cushioning mechanism that absorbs impacts generated during the comminution process. This beforehand cushioning prevents impact forces from being transmitted to the base unit, thereby reducing noise while maintaining connection strength.
3Adaptability or versatility
If a separate grinder is used outside the kitchen appliance, then grinding function is achieved, but device complexity increases and user safety is reduced
Solution Approach 1:
The grinding function is merged with the kitchen appliance by integrating the grinding element into the rotating element assembly. This combination eliminates the need for a separate grinder device, reduces overall system complexity, and improves user safety by containing the grinding function within the enclosed appliance structure.
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 enables a more efficient and gentle grinding process with reduced noise, allowing for precise control over grinding levels and integration of a grinder within the kitchen appliance, eliminating the need for separate grinders and enhancing user safety.
Implementation Method 1
a coupling element having at least one elastic partial area... to compensate an axial tilt of the grinding element in the grinding vessel and/or a radial displacement of the grinding element relative to the grinding vessel
Implementation Method 2
impacts by the grinder, which occur in response to the comminution of the base products, are furthermore also dampened
Data Source
AI summary
An electric motor operated kitchen appliance has a base unit having an electric motor and a preparation vessel, which can be connected to the base unit and into which a rotating element protrudes, which can be rotationally driven by means of the electric motor, wherein a grinding element, which, with a grinding area of a grinding vessel held on the preparation vessel, forms a grinder, can be connected to the rotating element. To advantageously further develop the kitchen appliance, the grinding element is connected to the rotating element via a coupling element having at least one elastic partial area.