Kitchen Working Tool With Scraper-Spatula for Vessel Wall Mixing

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Solution Overview

Problem

Motor-driven kitchen devices face issues with sticky food adhering to the inner surface of the processing vessel, leading to inefficient stirring or beating, as existing solutions either require manual scraping, which is inconvenient, or automatic scraping mechanisms that may not effectively prevent re-sticking of processed food.

Innovation Solution

A working tool with a scraper sector and spatula sector integrated into a molded attachment on a firm frame, designed to closely follow the vessel's inner surface, providing effective scraping and improved food positioning, mixing, and kneading functions during operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a rigid rod extension is used to scrape adhering ingredients, then scraping effectiveness is improved, but the rod cannot fit closely to the inner surface of the vessel and may interfere with mixing tool operation

Engineering Contradiction:
Improvescraping effectivenessVSAvoidfitting to vessel surface
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The patent employs a flexible scraper element that can dynamically adapt its shape and position during operation. The scraper is designed to be flexible rather than rigid, allowing it to conform to the curved inner surface of the mixing vessel while maintaining continuous contact for effective scraping without interfering with the mixing tool's operation.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The scraper element is constructed as a flexible component that can bend and conform to the vessel's inner surface geometry. This flexibility allows the scraper to maintain close contact with the curved surface throughout the mixing cycle, ensuring thorough scraping while accommodating the dynamic movement of the mixing tool.

Inventive Principle:
Principle #30Flexible shells and thin films

2Ease of operation

If a flexible rod extension is used to scrape adhering ingredients, then the rod can fit closely to the inner surface of the vessel, but it interferes with the operation of the mixing tool when processing denser ingredients

Engineering Contradiction:
Improvefitting to vessel surfaceVSAvoidmixing effectiveness
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The scraper element's flexibility is strategically designed to allow it to conform to the vessel surface during idle periods while remaining clear of the mixing tool's path during active mixing. The dynamic positioning ensures the scraper does not obstruct the mixing tool when processing dense ingredients like dough.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The scraper is designed as a separate, removable component that can be independently positioned and adjusted. This segmentation allows the scraper to be optimized for surface contact during certain phases of operation while not interfering with the mixing tool during other phases, particularly when handling dense ingredients.

Inventive Principle:
Principle #1Segmentation

3Productivity

If manual scraping is used to remove processed food from the vessel surface, then scraping effectiveness is improved, but processing time increases and user attention is required

Engineering Contradiction:
Improvescraping effectivenessVSAvoidprocessing time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The scraper is integrated as an automatic component of the mixing device that performs scraping functions without requiring user intervention. The scraper operates autonomously during the mixing cycle, continuously removing adhering ingredients from the vessel surface, thereby eliminating the need for manual scraping and associated user attention.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The integrated scraper operates continuously throughout the mixing process, maintaining constant contact with the vessel inner surface to prevent ingredient adhesion. This continuous scraping action ensures that ingredients are consistently removed from the surface throughout processing, eliminating the need for intermittent manual intervention.

Inventive Principle:
Principle #20Continuity of useful action

Data Source

PatentEP2702912B1Kitchen device with working tool
Publication Date: 2016.03.30 BSH HAUSGERATE GMBH
  • EP2702912B1 patent drawingFigure 1
  • EP2702912B1 patent drawingFigure 2~3

AI summary

A working tool (10) for a motor driven kitchen device adapted to be rotationally driven, comprising a clutch (1) adapted to couple the working tool (10) to a corresponding motor clutch of the kitchen device, a firm frame (2) with at least one arm (3, 4) that, depending on the rotational movement of the working tool, follows closely the inner surface (8) of the kitchen device vessel (9) and a molded attachment (9) that is molded in substantial length onto the first arm (3) of the firm frame (2). The first arm (3) is in close proximity to the inner surface (8) of the vessel (9) during rotation. The molded attachment (5) further comprises a scraper sector (11) and a spatula sector (12), wherein the scraper sector (12) is extending from the first arm (3) of the firm frame (2) towards the direction of the inner surface (8) of the vessel (9) providing direct contact with the inner surface (8) of the vessel (9) and/or with processed food adhering to it, and the spatula sector (12) is extending in the opposite direction, towards the clutch (1) of the working tool (10). In addition to the scraping effect of the scraper sector (11), the spatula sector (12) provides additional and/or improved functions such as such as improved positioning of the processed food, mixing, kneading.