Foreign Substance Trap With Buoyancy Shutoff for Vacuum Cooking

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Solution Overview

Problem

Cooking devices that use vacuum suction processes often suffer from damage due to foreign substances entering the exhaust channel and reaching the vacuum pump, leading to equipment breakdowns.

Innovation Solution

A foreign substance trap device is integrated into the cooking device, featuring a first member with fluid intake holes, a second member with an exhaust channel, and a movable member that closes the exhaust channel by being moved by liquid flowing through the intake holes, preventing foreign substances from reaching the vacuum pump.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If vacuum suction process is used to evacuate air from container, then oxidation of food is prevented, but foreign substances enter exhaust channel and reach vacuum pump causing breakdown

Engineering Contradiction:
Improvevacuum pump reliabilityVSAvoidforeign substance contamination
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

A movable member is introduced as an intermediary element between the exhaust channel and vacuum pump. This movable member automatically moves to block the exhaust channel when liquid foreign substances are detected, preventing them from reaching the vacuum pump while allowing gas flow during normal operation.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The movable member is designed to automatically respond to the presence of liquid foreign substances using buoyancy forces. When liquid enters the exhaust channel, the movable member self-activates to block the channel without requiring external control systems, achieving protective function through self-service mechanism.

Inventive Principle:
Principle #25Self-service

2Productivity

If exhaust channel remains open for gas flow, then vacuum suction function works, but liquid foreign substances can reach vacuum pump

Engineering Contradiction:
Improvevacuum suction efficiencyVSAvoidvacuum pump protection
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The exhaust channel blocking mechanism transitions from static to dynamic. The movable member can freely move between open and blocked positions based on the presence of liquid foreign substances. During normal gas flow, the channel remains open for productivity; when liquid is detected, the movable member automatically blocks the channel to protect the pump.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system uses the physical properties of liquid foreign substances (buoyancy) to automatically trigger the blocking mechanism. The movable member self-activates when liquid enters the exhaust channel, eliminating the need for sensors or external control systems to protect the vacuum pump.

Inventive Principle:
Principle #25Self-service

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

Effectively blocks both solid and liquid foreign substances from entering the vacuum pump, preventing damage and ensuring the integrity of the vacuum suction process.

Implementation Method 1

a movable member movably disposed between the first member and the second member and closing the exhaust channel by being moved by liquid in fluid flowing inside through the fluid intake hole

Methodology Applied
Scientific EffectBuoyancy: Archimedes' Principle (Buoyancy)

Data Source

PatentUS11589705B2Foreign substance trap device and cooking device using same
Publication Date: 2023.02.28 NUC ELECTRONICS CO LTD
  • US11589705B2 patent drawing
  • US11589705B2 patent drawing
  • US11589705B2 patent drawing

AI summary

A foreign substance trap device according to an embodiment of the present disclosure includes: a first member in which at least one fluid intake hole is formed; a second member in which at least a portion of an exhaust channel, through which gas in liquid flowing inside through the fluid intake hole is discharged, is formed; and a movable member movably disposed between the first member and the second member and closing the exhaust channel by being moved by liquid in fluid flowing inside through the fluid intake hole.