Beverage Pump Pole Sleeve Permeability for High Pressure
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Solution Overview
Problem
Existing beverage pumps for domestic appliances, such as coffee dispensers, are not cost-effective and efficient in conveying liquids due to the high material requirements and complex manufacturing processes.
Innovation Solution
A beverage pump design featuring a pole sleeve with varying magnetic permeability along the main flow direction, a reduced magnetic permeability in the axial edge region, and a simplified axial section profile, which allows for a cost-effective and efficient magnetic flux conduction using a minimal amount of metal, particularly copper, in the magnetic actuator coil.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a conventional beverage pump design is used, then sufficient magnetic force can be generated, but high material requirements and complex manufacturing processes result
Solution Approach 1:
The pole sleeve is designed with varying wall thickness along its length, creating regions of different magnetic permeability. The first region has a first wall thickness while the second region has a second wall thickness that is different from the first, allowing optimized magnetic flux distribution in different zones without requiring complex manufacturing throughout the entire component
Solution Approach 2:
The magnetic permeability of the pole sleeve is changed by varying the wall thickness parameter along its length. This creates a gradient in magnetic properties that optimizes the magnetic force generation while simplifying the overall design and manufacturing process compared to conventional uniform designs
2Stress or pressure
If high pressure (at least 10 bar) is achieved, then effective liquid conveyance is obtained, but material usage and manufacturing cost increase
Solution Approach 1:
Different regions of the pole sleeve have different wall thicknesses optimized for their specific functional requirements. The first region has sufficient thickness to generate the required magnetic force for high-pressure liquid conveyance, while the second region has reduced thickness to minimize material usage without compromising overall performance
Solution Approach 2:
The wall thickness parameter is varied along the length of the pole sleeve to optimize the balance between pressure generation capability and material consumption, achieving at least 10 bar pressure with reduced metal quantity
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 design results in a highly efficient beverage pump that can achieve pressures of up to 15 bar with reduced material usage, enhancing cost-effectiveness and manufacturing simplicity while maintaining high performance and user comfort.
Implementation Method 1
at least one pole sleeve for conducting a magnetic flux generated by a magnetic actuator
Implementation Method 2
an advantageous characteristic progression of a magnetic force acting onto an armature is achievable
Data Source
AI summary
A domestic appliance, in particular a beverage dispenser machine, with a beverage pump having at least one pole sleeve for conducting a magnetic flux generated by a magnetic actuator, wherein the pole sleeve has, along a main flow direction of the liquid, a substantially changing magnetic permeability, wherein the pole sleeve has a reduced magnetic permeability in an axial edge region.