Patent ID: 11871868
Assignee: DAITO GIKEN, INC.
Field: Furniture, games (Other fields)
Classification: CPC A | IPC A

Claim 0:
1. A coffee machine comprising:
a first grinder configured to grind coffee beans;
a second grinder configured to grind coffee beans ground by the first grinder;
a separation unit that is between the first grinder and the second grinder and configured to separate a waste from coffee beans by an air suction force; and
a reservoir unit that includes an upper portion and a lower portion and is configured to store the waste separated from the coffee beans in the separation unit, wherein
the upper portion includes a first space connected to the separation unit and an exhaust pipe in the first space,
a suction unit including a fan motor is above the exhaust pipe,
the suction unit is configured to send an air flow containing the waste from the separation unit to the first space by suction caused by rotation of the fan motor,
the exhaust pipe is configured to have the air flow containing the waste sent form the separation unit and swirl downwards around the exhaust pipe,
the lower portion of the reservoir unit includes an outer case body and an inner case body which is inside of the outer case body with a second space between an inner side wall of the outer case body and the inner case body,
the inner case body has, in a circumferential side wall of the inner case body inside of the outer case body, an opening connected to the inside of the outer case body,
the inner case body is configured such that an air flow containing the waste swirled downwards around the exhaust pipe enters inside the circumferential side wall, and after the waste falls by weight of the waste inside the circumferential side wall, and an air flow is suctioned by the suction unit and rises, the waste passes through the opening,
the outer case body stores the waste passed through the opening, and
the suction unit exhausts the air flow from which the wastes are separated upward along a central axis of the exhaust pipe by the suction.