A bean roasting system includes a roasting drum, an agitator, and a door. The roasting drum has an inside surface extending from a back end to a front end. The agitator has blades mounted to an axial shaft. The axial shaft has an anterior end portion. The door is mounted rotationally relative to the roasting drum and includes a glass plate and a bearing assembly. The glass plate provides visual access to contents inside the roasting drum when the door is closed. The bearing assembly includes an outer housing and an inner bearing. The outer housing is mounted to the glass plate. The inner bearing defines a receiving hole that receives and supports the anterior end portion of the axial shaft when the door closed.

An apparatus for roasting coffee beans comprises a roasting chamber for containing coffee beans. The roasting chamber is positioned within a resonant cavity of a waveguide. A microwave emitter produces microwave energy within the waveguide with one or more stable high intensity microwave regions within the roasting chamber to heat the coffee beans in the roasting chamber to a temperature sufficient to roast the coffee beans. A device configured to move the coffee beans within the one or more high intensity microwave regions is coupled to the roasting chamber.

An apparatus for roasting coffee beans comprises a roasting chamber for containing coffee beans. The roasting chamber is positioned within a resonant cavity of a waveguide. A microwave emitter produces microwave energy within the waveguide with one or more stable high intensity microwave regions within the roasting chamber to heat the coffee beans in the roasting chamber to a temperature sufficient to roast the coffee beans. A device configured to move the coffee beans within the one or more high intensity microwave regions is coupled to the roasting chamber.

An apparatus for drying and/or roasting beans, such as cocoa beans, or parts of beans, such as nibs, includes a frame, a drum for receiving the (parts of) beans, rotatably mounted in the frame and provided with an inlet for a fluid, in particular a gas, such as heated air, a fan for feeding the fluid via the inlet to the drum, and a drive for rotating the drum. The fluid inlet and the drive are located on the same end of the drum.

An apparatus for drying and/or roasting beans, such as cocoa beans, or parts of beans, such as nibs, includes a frame, a drum for receiving the (parts of) beans, rotatably mounted in the frame and provided with an inlet for a fluid, in particular a gas, such as heated air, a fan for feeding the fluid via the inlet to the drum, and a drive for rotating the drum. The fluid inlet and the drive are located on the same end of the drum.

A foodstuff preparation device may include a roasting chamber having grinding funnel configured for communicating a foodstuff, having a pre-ground particle size, between two or more grinding stones, such as a first grinding stone and a second grinding stone. A grinding motor may be configured to motivate the foodstuff between the two or more grinding stone so that the foodstuff exits from between a first grinding stone and second grinding stone with a first ground particle size, the first ground particle size smaller than the pre-ground particle size. Generally, the device may be configured to prepare foodstuffs, such as sesame seeds, by roasting and grinding them to produce Tahini, or any other similar prepared food. Optionally, the foodstuff may be communicated into the grinding funnel from a dispensing funnel or from a roasting cavity having a heating element configured to govern the temperature of the roasting cavity.

A roasting drum of a coffee bean roaster including a drum body, an end plate and a plurality of guide vanes. The end plate is coupled to an end of the drum body and has a plurality of through holes communicating with an inside and an outside of the drum body, each of the through holes is elongated and extends along a radial direction of the end plate. The guide vanes are connected to the end plate and disposed respectively at one side of the through holes. With the flow guiding of the guide vanes, the airflow inside the roasting drum of the coffee bean roaster is efficiently accelerated.

A roasting drum of a coffee bean roaster including a drum body, an end plate and a plurality of guide vanes. The end plate is coupled to an end of the drum body and has a plurality of through holes communicating with an inside and an outside of the drum body, each of the through holes is elongated and extends along a radial direction of the end plate. The guide vanes are connected to the end plate and disposed respectively at one side of the through holes. With the flow guiding of the guide vanes, the airflow inside the roasting drum of the coffee bean roaster is efficiently accelerated.

A roasting drum and a manufacturing method thereof including a drum body and at least one agitator blade. The drum body includes a drum wall which provides with at least one fixing hole, the at least one fixing hole passing through an inner surface and an outer surface of the drum wall. The at least one agitator blade is disposed in the drum body and is provided with at least one fixing convex part which passes through the at least one fixing hole. The agitator blade can be positioned in the drum body and is not easily displaced when assembling.

A roasting drum and a manufacturing method thereof including a drum body and at least one agitator blade. The drum body includes a drum wall which provides with at least one fixing hole, the at least one fixing hole passing through an inner surface and an outer surface of the drum wall. The at least one agitator blade is disposed in the drum body and is provided with at least one fixing convex part which passes through the at least one fixing hole. The agitator blade can be positioned in the drum body and is not easily displaced when assembling.