Pump Coffee Brewer Filtration for Sediment-Free Single Servings

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Solution Overview

Problem

Existing coffee brewing methods, such as French Press, do not efficiently separate coffee grounds from brewed coffee, leading to sediment in the beverage, which is not easily removable like in drip or percolating brewers.

Innovation Solution

A pump coffee brewer with a deformable exterior wall pump assembly, filtration assembly including a filtration disc, coarse filter, and disposable fine filter, and a brew chamber assembly that interfaces with a coffee mug, allowing for manual pressure application to separate brewed coffee from grounds and provide sediment-free brewing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a French Press is used to brew individual servings of coffee, then ease of preparation and individual serving capability are improved, but sediment removal efficiency deteriorates

Engineering Contradiction:
Improveease of preparationVSAvoidsediment in beverage
Core Design Contradiction:
Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The filtration system is divided into multiple stages: a permanent filter that captures larger coffee grounds and a disposable fine filter that captures finer sediments. This segmented approach allows each filter to handle specific particle sizes, achieving comprehensive sediment removal while maintaining ease of operation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The harmful sediment particles are extracted from the brewed coffee through the filtration assembly. The filters physically separate and remove coffee grounds and sediments from the liquid coffee, eliminating the harmful factor while preserving the desired coffee beverage.

Inventive Principle:
Principle #2Taking out (Extraction)

2Object-generated harmful factors

If a pump assembly is added to separate coffee grounds from brewed coffee, then sediment removal efficiency is improved, but device complexity increases

Engineering Contradiction:
Improvesediment removalVSAvoiddevice complexity
Core Design Contradiction:
Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The pump assembly is designed to be manually operated by the user through simple pumping motion. The user themselves performs the separation function by pumping, eliminating the need for complex automated mechanisms. The system serves itself through user action, achieving sediment removal without adding significant device complexity.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The pump assembly utilizes hydraulic principles where manual pumping action creates pressure differential to force coffee through the filtration assembly. This pneumatic-hydraulic mechanism achieves efficient sediment separation through simple mechanical motion rather than complex automated systems.

Inventive Principle:
Principle #29Pneumatics and hydraulics

3Object-generated harmful factors

If multiple filtration components are used to remove sediment, then purification efficiency is improved, but ease of operation deteriorates

Engineering Contradiction:
Improvepurification efficiencyVSAvoidease of operation
Core Design Contradiction:
Object-generated harmful factorsVSEase of operation

Solution Approach 1:

Multiple filtration components (permanent filter, disposable fine filter, pump assembly) are merged into a single integrated filtration assembly that fits within the brew chamber. This combined structure allows users to operate one unified system rather than handling separate filtration devices, maintaining ease of operation while achieving high purification efficiency through multiple filtering stages.

Inventive Principle:
Principle #5Merging (Combining)

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

Enables the preparation of individual servings of freshly brewed coffee with ease, similar to French Press, while allowing for efficient sediment removal, similar to drip or percolating methods, by using a pump assembly to separate coffee grounds from the brewed coffee.

Implementation Method 1

The pump assembly can comprise a deformable exterior wall for generating pressure within the brew chamber assembly

Methodology Applied
Scientific EffectPressure generation through deformation: Compression

Implementation Method 2

The pump assembly can comprise an air flow valve to relieve any vacuum formed within the brew chamber assembly as heated water within the brew chamber assembly begins to cool

Methodology Applied
Scientific EffectVacuum relief: Pressure Drop

Implementation Method 3

The filtration assembly can comprise a filtration disc, a coarse filter and a disposable fine filter allowing freshly brewed coffee to be separated from ground coffee

Methodology Applied
Scientific EffectPhysical filtration: Filter (physical)

Data Source

PatentUS10470602B2Pump coffee brewer
Publication Date: 2019.11.12 NATIONAL PRESTO IND INC
  • US10470602B2 patent drawing
  • US10470602B2 patent drawing
  • US10470602B2 patent drawing

AI summary

A pump coffee brewer and related methods of use for brewing individual servings of coffee. The pump coffee brewer can include a pump assembly, brew chamber assembly and filtration assembly, whereby user manipulation of the pump assembly directs heated water through ground coffee to form freshly brewed coffee. The pump coffee brewer can physically interface with a coffee mug for receiving the freshly brewed coffee while in some alternative embodiments, a discharge assembly can be incorporated for filling the coffee mug. The pump coffee brewer all provide a coffee consumer the ability to generate individual servings of freshly brewed coffee on demand.