Electric Pressure Cooker Steam Flow Path Design to Prevent Clogging
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Solution Overview
Problem
Electric pressure cookers face issues with steam exhaust flow path clogging due to rice water and alien substances, which can lead to safety hazards such as explosions and fires.
Innovation Solution
The design incorporates a steam flow path defined by first and second flow path guide members on the inner and inside lids, guiding steam circulation to prevent clogging and filter out rice water and alien substances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If steam is exhausted through a steam outlet during cooking, then cooking efficiency is improved, but rice water and alien substances deposit on the steam exhaust flow path causing clogging
Solution Approach 1:
The steam exhaust flow path is segmented into multiple channels by dividing the steam outlet into multiple smaller outlets. This segmentation prevents rice water and alien substances from accumulating and clogging a single large outlet, while still maintaining effective steam exhaust capability for efficient cooking
Solution Approach 2:
A filter structure is introduced as an intermediary component between the cooking chamber and the steam outlet. This filter captures rice water and alien substances before they can deposit on the steam exhaust flow path, allowing steam to pass through while blocking harmful deposits
Data Source
AI summary
An electric pressure cooker includes: a main body; an inner pot configured to be accommodated in the main body; a lid fastening ring configured to be fastened to an upper surface of the main body; an inner lid that is disposed radially inside of the lid fastening ring and that includes a steam outlet and a first flow path guide member that are disposed at a lower surface of the inner lid; and an inside lid that is configured to be coupled to the lower surface of the inner lid and that includes a second flow path guide member disposed at an upper surface of the inside lid. The inner lid and the inside lid define a steam flow path configured guide steam generated in the inner pot to the steam outlet by the first flow path guide member and the second flow path guide member.