Cold brew coffee maker as brewed by pressure-boosting water
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Solution Overview
Problem
Existing coffee makers do not effectively filter and boost water pressure simultaneously, especially at low temperatures, which affects the brewing process and flavor of cold brew coffee.
Innovation Solution
A cold brew coffee maker with a water filtration system, a water pump, and a coffee brewing module that includes a pressurized water storage tank, solenoid valve, and a detachable brewing cup, allowing for filtered and pressurized water to be delivered at low temperatures for efficient brewing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If water is filtered through a filtration system, then water purity is improved, but water pressure is reduced
Solution Approach 1:
The system segments the water delivery process into distinct stages: filtration stage (where pressure is reduced but purity is improved) and brewing stage (where pressure is restored through a separate pump). The brewing pump is activated only when water is needed for brewing, delivering pressurized water to the brewing chamber without compromising the filtration quality.
Solution Approach 2:
Water is pre-filtered through the filtration system before storage in the tank, ensuring high purity water is available for brewing. The brewing pump then takes this pre-filtered water and delivers it with the required pressure when brewing is initiated, separating the filtration function from the pressurization function.
2Productivity
If water pressure is boosted for efficient brewing, then brewing efficiency is improved, but device complexity increases
Solution Approach 1:
The brewing pump is integrated into the existing coffee maker structure, combining the pressurization function with the brewing system. The pump draws from the same water tank that receives filtered water, merging storage, filtration, and pressurization functions into a unified system rather than separate independent units.
Solution Approach 2:
The brewing pump is activated automatically through a control system that detects when brewing is needed, eliminating the need for manual pump operation. The system self-regulates the pumping cycle based on brewing requirements, reducing operational complexity while maintaining brewing efficiency.
3Manufacturing precision
If water is kept at low temperature for cold brew, then coffee flavor is improved, but brewing speed decreases
Solution Approach 1:
Coffee grounds are pre-loaded into the brewing chamber before water is introduced. When brewing is initiated, the brewing pump immediately delivers pressurized cold water to the pre-positioned grounds, reducing the overall brewing time while maintaining the low-temperature extraction process that produces superior flavor.
Solution Approach 2:
The system replaces thermal energy (heat) with mechanical energy (pressure) as the primary driving force for extraction. Instead of using hot water to accelerate extraction, cold pressurized water is forced through the coffee grounds at high velocity, achieving efficient extraction without thermal input and thus preserving the distinctive cold brew flavor profile.
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 solution enables efficient coffee brewing at low temperatures by filtering and pressurizing water, enhancing flavor and convenience through improved agitation and mixing, while maintaining ease of operation and maintenance.
Implementation Method 1
a water pump having a suction end of the water pump connected to the water cleaning system, and a discharge end of the water pump connected to a pressurized-water storage tank for storing a filtered water in the tank
Implementation Method 2
a solenoid valve formed between the brewing cup and the pressurized-water storage tank, and a switch panel formed in the main body; whereby upon actuation of the switch panel to open the solenoid valve, the pressurized water will be ejected into the cup
Data Source
AI summary
A cold brew coffee maker has a water cleaning system connected to a water source; a water pump connected to the water cleaning system, and connected to the pressurized-water storage tank for storing a filtered water in the tank; and a coffee brewing module connected to the pressurized-water storage tank and including: a detachable brewing cup detachably secured to a fixing bracket, a solenoid valve formed between the brewing cup and the pressurized-water storage tank, and a switch panel formed in the main body; whereby upon starting of the pump to suck and filter a feed water, a filtered pressurized water less than 30 degrees centigrade will be delivered into the tank and upon actuation of the switch panel to open the solenoid valve, the pressurized water will be ejected into the cup for brewing coffee.