French Press Lid Valve to Prevent Splashing and Heat Loss
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Solution Overview
Problem
French Press coffee makers pose safety risks due to potential scalding from spurting hot liquid when pressing down the plunger-filter and risk of coffee dripping during pouring, and they suffer from heat loss through the lid.
Innovation Solution
A plunger-filter beverage-maker design featuring a pivotable lever with a closure body that automatically seals the pouring opening until actuated by the user, minimizing heat loss and preventing splashing or dripping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the pouring opening is left open to enable pouring, then pouring function is improved, but heat loss increases and safety risk increases
Solution Approach 1:
The closure body is positioned to automatically close the pouring opening before the beverage is fully prepared, preventing heat loss and potential splashing. The user must deliberately actuate the lever to open it for pouring, ensuring the opening is only exposed when needed.
2Loss of energy
If the pouring opening is covered to prevent heat loss, then heat retention is improved, but pouring operation becomes more complex
Solution Approach 1:
The closure body is made movable relative to the lid, allowing it to pivot between a closed position (retaining heat) and an open position (allowing pouring). This dynamic element provides automatic heat retention while maintaining simple pouring operation through lever actuation.
3Ease of operation
If the spout is exposed to allow pouring, then pouring function is improved, but risk of scalding from spurting liquid increases
Solution Approach 1:
The closure body automatically closes the pouring opening during the beverage preparation phase, preventing any hot liquid from reaching the spout area. Only after the beverage is ready and the user deliberately opens the lever is the spout exposed, eliminating the risk of scalding from premature spurting.
4Object-affected harmful factors
If a flap is used to cover the spout, then scalding prevention is improved, but coffee dripping occurs during pouring
Solution Approach 1:
The closure body is completely removed from the spout area, eliminating any surface that could cause coffee to drip. Instead, the closure body seals the pouring opening upstream, allowing coffee to flow cleanly through the spout without contact with closing elements that would cause dripping.
Data Source
AI summary
The invention discloses a plunger-filter beverage-making machine with a lid which can be closed by a valve. The beverage-making machine has a vessel (2), a lid (3) and a filter piston (4) which can be vertically displaced in the vessel and has a piston rod (41). The lid (3) contains a pouring opening (37) which can be closed by means of an elongate lever (33) which extends transverse to the piston rod. To this end, the lever is mounted on the lid such that it can pivot about a horizontal axis. The lever has, in the region of its front end, a closure body (36) in order to close the pouring opening and, in the region of its rear end, an operating region (331) in order to pivot the lever by virtue of pressure exerted by a finger of a user.