A bean roasting system comprises a roasting drum including (1) a housing enclosing a roasting chamber and having a curved inner surface defined by a curved lower wall, and (2) an air inlet chamber fluidically coupled to the roasting chamber and configured to direct air toward the curved inner surface which redirects the air in a first rotational direction. A distal end of each blade from a plurality of blades is disposed from a axis of rotation toward the curved lower wall by a distance no greater than R. The curved lower wall is spaced at least a distance R+G from the axis of rotation to provide a minimum gap G. The agitator blade set and the directed air are collectively prevents accumulation of beans along the curved lower surface during a roasting process.

An apparatus according to an embodiment includes a bean roaster core, an autoloader configured to be removably coupled to the bean roaster core, and a bulk receiver configured to be removably coupled to the bean roaster core. The bean roaster core includes a roasting drum and a recirculating air subsystem fluidically coupled to the roasting drum, and has a single-batch configuration and a multi-batch configuration. The bean roaster core is in the multi-batch configuration when the autoloader is removably coupled to the bean roaster core. The autoloader is not removably coupled to the bean roaster core when the bean roaster core is in the single-batch configuration. The bulk receiver is configured to receive a product or a byproduct of a roasting process from the bean roaster core when the bean roaster core is in the multi-batch configuration and the bulk receiver is removably coupled to the bean roaster core.

An apparatus according to an embodiment includes a bean roaster core, an autoloader configured to be removably coupled to the bean roaster core, and a bulk receiver configured to be removably coupled to the bean roaster core. The bean roaster core includes a roasting drum and a recirculating air subsystem fluidically coupled to the roasting drum, and has a single-batch configuration and a multi-batch configuration. The bean roaster core is in the multi-batch configuration when the autoloader is removably coupled to the bean roaster core. The autoloader is not removably coupled to the bean roaster core when the bean roaster core is in the single-batch configuration. The bulk receiver is configured to receive a product or a byproduct of a roasting process from the bean roaster core when the bean roaster core is in the multi-batch configuration and the bulk receiver is removably coupled to the bean roaster core.

A thermal conductive device of a drum roaster is provided. A hot airflow flows to airflow outlets through airflow inlets while a heating device works. A plurality fluxes of airflow heat is formed by the hot airflow flowing into a roasting space through a plurality of air-deflecting fins while a physical thermal conduction is generated between inner and outer drums due to thermal conductive metals of the air-deflecting fins. When the airflow heat is hotter than the physical thermal conduction, the airflow heat is used for compensation of temperature of the physical thermal conduction. On the other hand, the physical thermal conduction is used for compensation of temperature of the airflow heat when the physical thermal conduction is hotter than the airflow heat. Thereby constant temperature, energy saving, uniform temperature, and heat retention are achieved and coffee beans obtain thermal energy more stably during roasting process.

A thermal conductive device of a drum roaster is provided. A hot airflow flows to airflow outlets through airflow inlets while a heating device works. A plurality fluxes of airflow heat is formed by the hot airflow flowing into a roasting space through a plurality of air-deflecting fins while a physical thermal conduction is generated between inner and outer drums due to thermal conductive metals of the air-deflecting fins. When the airflow heat is hotter than the physical thermal conduction, the airflow heat is used for compensation of temperature of the physical thermal conduction. On the other hand, the physical thermal conduction is used for compensation of temperature of the airflow heat when the physical thermal conduction is hotter than the airflow heat. Thereby constant temperature, energy saving, uniform temperature, and heat retention are achieved and coffee beans obtain thermal energy more stably during roasting process.

The invention relates to an apparatus (1) and a method for more convenient roasting of coffee beans. The apparatus (1), which is provided for roasting coffee beans, comprises: a chamber (10) in which coffee beans can be received for roasting, wherein the chamber (10) comprises an opening (13), and a device for roasting the coffee beans received in the chamber (10). The chamber (10) is movable with respect to a movement axis into different positions, wherein these positions comprise a roasting position, preferably a bean reception position, and a bean discharge position, wherein in the roasting position the device is arranged to roast the coffee beans received in the chamber (10), in the bean reception position, if present, the chamber (10) is arranged to receive, via the opening (13), coffee beans for subsequent roasting in the roasting position, and in the bean discharge position the chamber (10) is arranged such that the coffee beans can be discharged via the opening (13) from the chamber (10).

The invention relates to an apparatus (1) and a method for more convenient roasting of coffee beans. The apparatus (1), which is provided for roasting coffee beans, comprises: a chamber (10) in which coffee beans can be received for roasting, wherein the chamber (10) comprises an opening (13), and a device for roasting the coffee beans received in the chamber (10). The chamber (10) is movable with respect to a movement axis into different positions, wherein these positions comprise a roasting position, preferably a bean reception position, and a bean discharge position, wherein in the roasting position the device is arranged to roast the coffee beans received in the chamber (10), in the bean reception position, if present, the chamber (10) is arranged to receive, via the opening (13), coffee beans for subsequent roasting in the roasting position, and in the bean discharge position the chamber (10) is arranged such that the coffee beans can be discharged via the opening (13) from the chamber (10).

A system for heating an object includes an electromagnetic radiation source emitting electromagnetic radiation, a first stage, a second stage, and a third stage. The object is placed into the first stage where it is struck by electromagnetic radiation to thereby heat the object. The object is then transported to the second stage which has a cooling fluid flowing therein. The object moves through the second stage to cool down subsequent to being struck by the electromagnetic radiation. Air and any particulate matter produced by the electromagnetic radiation striking the object in the first stage is transported to the third stage. In the third stage, electromagnetic radiation is used to incinerate some of the particulate matter. The air in the third stage is vented out of the third stage through a filter.

A system for heating an object includes an electromagnetic radiation source emitting electromagnetic radiation, a first stage, a second stage, and a third stage. The object is placed into the first stage where it is struck by electromagnetic radiation to thereby heat the object. The object is then transported to the second stage which has a cooling fluid flowing therein. The object moves through the second stage to cool down subsequent to being struck by the electromagnetic radiation. Air and any particulate matter produced by the electromagnetic radiation striking the object in the first stage is transported to the third stage. In the third stage, electromagnetic radiation is used to incinerate some of the particulate matter. The air in the third stage is vented out of the third stage through a filter.

A drum roaster for roasting beans. The drum roaster includes a housing assembly in which a roasting drum for receiving the beans is rotatably supported, a drive device for rotating the roasting drum, and a heating assembly for heating the beans at least via a heating air. The heating assembly includes an electric heating element for heating a feed air, a suction fan for extracting the heating air out of the roasting drum, and a feed air fan to supply the feed air.

The electric heating element is arranged in a heating tube upstream of the roasting drum as seen in a flow direction of the heating air. The suction fan is arranged downstream of the roasting drum as seen in the flow direction of the heating air. The feed air fan is arranged upstream of the electric heating element as seen in a flow direction of the feed air.