Food-processing tool for a kitchen appliance suitable for mixing low quantities of food preparation

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Solution Overview

Problem

Existing mixer accessories for household appliances are ineffective in properly mixing small quantities of food preparation, as they are designed to handle larger amounts and do not optimize mixing when the ingredient volume is limited.

Innovation Solution

A mixer accessory with a drive part having a first axis of rotation and at least one arm, featuring a whip mounted freely on a second axis of rotation, with a base that includes mixing means such as undulations around and below it to enhance mixing and emulsion of small quantities, ensuring the whisk is positioned close to the container bottom for efficient operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If traditional mixer accessories with whips mounted on crosspieces are used, then mixing of large quantities of food preparation is effective, but mixing of small quantities of food preparation is ineffective

Engineering Contradiction:
Improvequantity of food preparationVSAvoidmixing effectiveness
Core Design Contradiction:
Quantity of substanceVSProductivity

Solution Approach 1:

The base of the whip is provided with mixing means (undulations) specifically designed to interact with small quantities of food preparation. This local modification of the whip structure concentrates mixing action at the base level where small quantities of ingredients are located, rather than relying solely on the upper whip strands.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The mixing means are arranged both around the periphery and below the base of the whip, creating a three-dimensional mixing action. The undulations extend downward below the base plane, adding a vertical dimension to the mixing action that effectively engages small quantities of food preparation in the container.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Ease of operation

If whips are positioned higher in the container, then mixing of large quantities is effective, but positioning closer to the bottom is needed for small quantities

Engineering Contradiction:
Improvemixing coverageVSAvoidquantity of food preparation
Core Design Contradiction:
Ease of operationVSQuantity of substance

Solution Approach 1:

The whip is designed to rotate freely on a second axis that is eccentric to the drive shaft axis. This dynamic positioning allows the whip to sweep through a larger volume of the container, reaching both the bottom area where small quantities are located and extending upward to cover larger quantities when present.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The base with undulations acts as an intermediary element between the whip strands and the food preparation. It provides a localized mixing surface that effectively engages small quantities of ingredients at the bottom of the container, transferring mixing action from the rotating whip to the ingredients.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If traditional mixing elements (strands, fins, blades) are used on whips, then general mixing is achieved, but optimization for small quantities is lacking

Engineering Contradiction:
Improvegeneral mixing capabilityVSAvoidsmall quantity of food preparation
Core Design Contradiction:
ProductivityVSQuantity of substance

Solution Approach 1:

The mixing function is segmented between the upper whip strands (for general mixing of larger quantities) and the base with undulations (for optimized mixing of small quantities). This segmentation allows each element to specialize in different quantity ranges, with the base providing targeted mixing action for small amounts.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The undulations on the base create a curved, wave-like surface that effectively engages with small quantities of food preparation. The curved geometry of the undulations promotes turbulent flow and thorough mixing action in the limited space occupied by small quantities of ingredients.

Inventive Principle:
Principle #14Spheroidality (Curvature)

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 accessory effectively mixes and emulsifies small quantities of food preparation by optimizing the mixing action with the base's mixing means, ensuring thorough incorporation even when the ingredient volume is minimal, such as one-fifth of the whisk's height.

Implementation Method 1

the mixing means comprise undulations distributed around and/or below the base, to promote the mixing and the emulsion of a small quantity of food preparation

Methodology Applied
Scientific EffectMechanical agitation: Stirring

Implementation Method 2

The eccentricity of the secondary axis of the whip and the friction of the strands with the ingredients during the rotation of the driving part according to the first axis of rotation allows said whip to enter into rotation according to the second axis of rotation, thus creating an epicyclic trajectory of the strands

Methodology Applied
Scientific EffectEccentric rotation: Eccentric

Implementation Method 3

The eccentricity of the secondary axis of the whip and the friction of the strands with the ingredients during the rotation of the driving part according to the first axis of rotation allows said whip to enter into rotation according to the second axis of rotation

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP3542688B1Food-processing tool for a kitchen appliance suitable for mixing low quantities of food preparation
Publication Date: 2023.05.10 SEB SA
  • EP3542688B1 patent drawingFigure 1~2
  • EP3542688B1 patent drawingFigure 3~6
  • EP3542688B1 patent drawingFigure 7~9

AI summary

The invention relates to a whisk attachment (1) for a food preparation appliance, the whisk attachment (1) comprising a drive unit (2) having a first axis (X1) of rotation and at least one arm (4, 5), the whisk attachment (1) comprising at least one whisk (7, 8), the whisk or each whisk (7, 8) being mounted to rotate freely on the arm or one of the arms (4, 5) along a second axis (X2, X3) of rotation eccentric with respect to the first axis (X1) of rotation. According to the invention, the whisk or one or less of the whisk(s) (7, 8), preferably the whisk or each whisk (7, 8), comprises a base (12) that is at least partially annular and has mixing means (120) moving above and at a distance from said at least one arm (4, 5) during the rotation of said at least one whisk (7, 8) to promote the mixing and emulsification of a small amount of food preparation.