Steam Cooker Venting and Handle Layout for Compact Ovens
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Solution Overview
Problem
Existing steam cookers face limitations in small ovens due to their shape and handle placement, experience uncontrolled pressure equalization issues, and inefficiencies in energy use, while also lacking multi-level cooking capabilities and effective condensation management.
Innovation Solution
A steam cooker design featuring a base with raised side walls, offset handles, a lid with pressure equalization vents, and stackable steamer inserts made of heat-efficient materials, allowing for efficient energy use, easy handling, and multi-level cooking with improved condensation management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If handles are attached to opposite long side walls of the base, then the steam cooker is easy to handle and carry, but the overall length of the lower part is increased making it difficult to use in small ovens
Solution Approach 1:
The handles are positioned asymmetrically on opposite long side walls rather than on the same side, allowing balanced carrying without extending the overall length beyond the base dimensions. This asymmetric placement on opposite sides enables two-handed carrying while maintaining a compact footprint suitable for small ovens.
2Device complexity
If an ordinary lid is used on the steam cooker, then the structure is simple, but uncontrolled pressure equalization occurs causing the lid to move, rattle or dance when internal pressure is higher than external pressure
Solution Approach 1:
The lid incorporates localized quality variations through its vent hole distribution pattern - smaller vent holes arranged in a specific pattern rather than a single large opening. This local differentiation in vent hole sizes and positions allows controlled pressure equalization that prevents lid movement while maintaining structural simplicity.
Solution Approach 2:
The lid design changes the pressure equalization parameters by using multiple small vent holes instead of one large hole, and by positioning these holes at specific locations on the lid. This parameter modification controls the rate and pattern of pressure equalization, preventing the lid from moving or rattling during steam cooking.
3Quantity of substance
If water vapor condenses on the lid or sides, then moisture is formed, but the condensation should run back into the steamer to maintain moisture levels
Solution Approach 1:
The lid features a curved, domed shape rather than a flat surface. This curvature causes condensation to naturally drain toward the center and edges where it can flow back into the steamer, preventing water accumulation on the lid surface and maintaining proper moisture levels in the cooking chamber.
4Ease of manufacture
If traditional materials like aluminum or copper are used for the base, then the manufacturing cost is lower, but energy efficiency is reduced compared to iron steel or chromium-nickel steel
Solution Approach 1:
The base is constructed from iron steel with silargan coating and nickel-plated/chrome-plated pouring edges, or alternatively chromium-nickel steel or chromium steel. These composite material structures combine the heat retention properties of iron steel with the corrosion resistance and aesthetic properties of plated surfaces, achieving superior energy efficiency while maintaining manufacturability.
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 design enhances usability in small ovens, ensures stable pressure, and optimizes energy efficiency, enabling multi-level steam cooking with efficient condensation handling and easy temperature monitoring.
Implementation Method 1
a lid having a skirt, a lid body, a lid handle, and a plurality of vents for pressure equalization
Implementation Method 2
The lower part with raised side walls can be made of iron steel with a silargan coating and typically nickel-plated and chrome-plated pouring edges, or be made of chromium-nickel steel or chromium steel. These materials hold heat better than traditional materials such as aluminum or copper, so energy can be used more efficiently.
Data Source
Figure 1
Figure 2A~2B
Figure 3~4
AI summary
The invention relates to a steam cooker, comprising a lower part (3), which has raised side walls (3a), wherein the sides walls comprise two long (3a) and two short sides, and which has handles (2) attached to the opposite long side walls (3a) so as to be diametrically offset relative to each other, and comprising a lid (11), which has a frame (12), a lid body (13), a lid handle (15), and a plurality of openings (16) for pressure equalization, and comprising at least one steam cooking insert (21, 31) to be inserted into the lower part (3), wherein the steam cooking insert (21, 31) is provided with through-holes (24) for steam to flow through and with handles (22, 32) arranged at an offset.