Coffee extraction apparatus

A coffee extraction apparatus, comprising:

• a grinder that is configured to grind whole beans into coffee powder having a preset size or less and that is configured to discharge the coffee powder;
• a grinder inlet defined at a first side of the grinder to introduce the whole beans to the grinder;
• a grinder outlet that is defined at a second side of the grinder opposite to the first side of the grinder and that is configured to discharge the coffee powder;
• a first extractor including:
• a receiver inlet that faces the grinder and that is configured to receive the discharged coffee powder,
• a filter part that is configured to receive the coffee powder through the receiver inlet and that is configured to extract coffee liquid by rotating the coffee powder with water of a first temperature, the first temperature being equal to or lower than 25 degrees Celsius, and
• a receiver that is configured to receive the water of the first temperature and that is configured to store the water of the first temperature or the extracted coffee liquid;
• a driver that is coupled to the filter part and that is configured to rotate the filter part about a rotation axis that is parallel to a direction in which the water of the first temperature passes through the filter part;
• a supporter that is disposed outside the grinder and the first extractor and that supports the grinder and the first extractor;
• and
• a water supplier configured to supply the water of the first temperature to the first extractor through the receiver inlet,
• wherein the receiver includes:
• a receiving body that defines a space for receiving the coffee powder and the water,
• a receiving body bottom surface that defines a bottom surface of the receiving body, and
• a first through-hole having a circular shape and defined at the receiving body bottom surface,
• a sealing part that is inserted into the first through-hole and that is configured to open and close the first through-hole,
• a second through-hole defined in the sealing part in a first direction corresponding to a height direction of the receiver, and
• a discharger that is coupled to a bottom surface of the sealing part and that is configured to guide the coffee liquid discharged through the first through-hole, and
• wherein the sealing part is configured to move in the first direction based on the rotation of the filter part to open and close the first through-hole.