Cyclic Preheating Coffee Pot for Constant Water Temperature Brewing

The patent applies preliminary action by preheating water in advance within the heating apparatus before it reaches the brewing unit. The system circulates water through the heating apparatus multiple times to ensure all water, including that in the outlet pipe, is heated to the required temperature before brewing begins, eliminating the cold water problem.

The patent implements continuous heating and circulation of water through the heating apparatus and outlet pipe before brewing. This continuous action ensures that water temperature is maintained consistently throughout the system, preventing cold water from entering the brewing unit and ensuring reliable brewing quality.

The patent employs feedback control through a temperature sensor that continuously monitors water temperature in the heating apparatus and outlet pipe. When temperature deviates from the set point, the control system adjusts the heating element to maintain constant temperature, ensuring stable brewing conditions.

The system maintains continuous heating and circulation of water through the heating apparatus and outlet pipe, ensuring water temperature remains constant throughout the brewing process. This continuous action prevents temperature fluctuations that would affect brewing quality.

The patent applies periodic action by using intermittent or cyclic circulation of water through the brewing chamber during cold brew extraction. This periodic movement of water enhances mass transfer and extraction efficiency, significantly reducing the required extraction time while maintaining cold brew quality.

The system incorporates mechanical vibration or agitation during the cold brew process to accelerate extraction. The vibration increases contact between water and coffee grounds, improving mass transfer rates and reducing extraction time from hours to minutes, thereby enhancing productivity.