Temperature controlling structure and filter assembly including the same

The patent applies preliminary action by pre-heating the filter cup and filter paper before brewing begins. The temperature controlling structure is filled with hot water prior to pouring brewing water, so that the container components are already warmed up. This preliminary heating action prevents excessive temperature reduction when brewing water is added, maintaining stable brewing temperature and consistent extraction rate throughout the brewing process.

The patent introduces a temperature controlling structure as an intermediary component between the brewing water and the filter cup. This structure acts as a thermal buffer that mediates the temperature interaction - it absorbs excess heat from the brewing water and releases it gradually, or prevents ambient temperature from directly affecting the brewing water. This intermediary approach simplifies temperature control compared to complex active heating systems, while still achieving stable brewing temperature.

The patent implements self-service by designing the temperature controlling structure to automatically maintain appropriate temperature without requiring user intervention with heat packs or machine drying functions. The structure can be simply filled with hot water before brewing, and it self-regulates the temperature of the filter cup and filter paper throughout the brewing process. This eliminates the need for complex calibration steps and multiple operations, making the process simple and accessible even for inexperienced users.