Steam-Chamber Coffee Brewing Vessel for Uniform Heating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional brewing vessels for Turkish or Greek coffee are time-consuming and fail to evenly distribute heat, leading to undesirable flavor profiles due to the placement of electric heating elements only at the bottom of the vessel.
Innovation Solution
A coffee brewing vessel with a steam chamber that surrounds the receptacle, featuring a helical steam path defined by a helical member between the inner and outer walls, allowing steam to circulate evenly and uniformly heat the coffee mixture, compatible with existing steam generating appliances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If electric heating elements are placed only at the bottom of the vessel, then the device complexity is reduced, but the heating uniformity deteriorates leading to undesirable flavor
Solution Approach 1:
The patent transitions from bottom-only heating (one-dimensional heating) to circumferential heating by adding a steam chamber surrounding the receptacle (three-dimensional heating distribution). The steam chamber wraps around the sides and bottom, creating multi-directional heat distribution that eliminates hot spots and ensures uniform heating throughout the coffee mixture.
Solution Approach 2:
The patent introduces steam as an intermediary heating medium between the heat source and the coffee mixture. Instead of direct contact with electric heating elements, the steam circulates through the steam chamber and transfers heat indirectly to the receptacle walls and coffee mixture, providing more uniform and controllable heating that preserves flavor.
2Ease of manufacture
If conventional brewing receptacles are used with flame or stove heating, then the manufacturing cost is reduced, but the brewing time increases and requires regular mixing
Solution Approach 1:
The patent replaces manual mechanical mixing with automated steam-driven circulation. The steam flow through the helical path creates natural convection currents that automatically mix the coffee mixture without requiring user intervention, eliminating the need for regular manual stirring while maintaining brewing speed.
Solution Approach 2:
The patent pre-configures the steam chamber with a helical steam path that is designed to create optimal circulation patterns before brewing begins. The steam inlet and outlet are positioned to establish continuous rotational flow, ensuring that mixing action is automatically generated as steam circulates, eliminating the need for subsequent manual mixing operations.
3Stability of the object's composition
If a steam chamber surrounds the receptacle, then the heating uniformity is improved, but the device complexity increases
Solution Approach 1:
The steam chamber serves multiple functions simultaneously: it provides circumferential heating to the receptacle, acts as a mixing mechanism through steam circulation, and functions as an insulating barrier. This multi-functionality justifies the additional structural element by delivering multiple benefits from a single added component.
Solution Approach 2:
The steam chamber is designed as a nested structure that surrounds the receptacle in an annular configuration, with the steam inlet and outlet ports integrated into the chamber walls. The helical baffle is nested within the steam chamber space, creating a compact nested arrangement that maximizes heating surface area while minimizing overall vessel volume and structural complexity.
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
This design enables rapid and uniform heating of the coffee mixture while preserving the flavor, reducing manufacturing costs and complexity compared to electric heating elements, and is compatible with various coffee appliances.
Implementation Method 1
a steam chamber which at least partially surrounds the receptacle so as to be arranged to receive steam from a steam generating appliance, for heating the coffee mixture in the receptacle
Implementation Method 2
The steam chamber may further define a generally helical path between the steam inlet and the steam outlet... allowing steam to circulate evenly and uniformly heat the coffee mixture
Data Source
Figure 1~2
Figure 3~4
AI summary
The coffee brewing vessel is typically used with a steam generating appliance, for example an espresso machine having a steam outlet for frothing milk. The vessel includes an outer wall having a cylindrical side wall portion and a circular bottom wall portion which receives an inner wall therein that similarly includes a cylindrical side wall portion and a circular bottom wall portion so as to define an enclosed steam chamber between the inner wall and the outer wall. A steam inlet is adapted to receive steam from the steam outlet of the steam generating appliance. A steam outlet is arranged to exhaust steam externally of the steam chamber. A coffee mixture of ground coffee beans and water is placed in a receptacle formed within the inner wall of the brewing vessel for heating the mixture when steam is circulated through the steam chamber from the inlet to the outlet thereof.