Beverage Extraction Device with Floating Seal to Prevent Pump Damage

The patent employs a liquid level sensor that continuously monitors the liquid level in the extraction chamber and provides feedback control to the air pump. When the liquid level reaches a predetermined height, the sensor automatically stops the air pump operation, preventing water from being sucked into the pump. This feedback mechanism resolves the contradiction by dynamically adjusting pump operation based on real-time liquid level conditions rather than relying on predetermined timing, thus both shortening extraction time and preventing pump damage.

The system uses an automatic liquid level detection mechanism that self-regulates the air pump operation without manual intervention. The sensor automatically detects when liquid reaches the critical level and triggers the control circuit to stop the pump, making the system self-protecting against water ingestion. This self-service approach eliminates the need for external monitoring while ensuring both efficient extraction and pump protection.

The liquid level sensor provides continuous monitoring regardless of the amount of material powder or tea in the chamber. When large quantities of material are used, the sensor detects the elevated liquid level and automatically adjusts or stops air pump operation to prevent water ingestion. This feedback control allows the system to handle variable material quantities safely without compromising pump reliability.

The system dynamically changes the operational parameters of the air pump based on the detected liquid level, which varies with the amount of material powder or tea. When material quantity increases and raises the liquid level, the control circuit modifies the pump's operation mode or stops it entirely, preventing water suction while maintaining extraction efficiency for the given material amount.